According to the measures of Maragioglio and Rinaldi the base of Menkaure's pyramid (G3) converted to cubits makes the pyramid 200 cubits long and 195 cubits wide which actually makes a 1 + 1/39 (40/39) ratio for the rectangular base. If Maragioglio and Rinaldi are correct would make the long side of the pyramid equal to 10 times the length of the Kings Chamber in G1. Which fits with G1, G3, Red and Bent Pyramids bases, all relating to the Kings Chamber.
Please do keep in mind everyone who has surveyed G3 derived different length measures for the base. To mention a couple from memory Petrie 4157.7 inches: Jim said ISE Edwards measured the long side around 4272 inches. In the latest survey Glenn Dash used Petrie's figures. Just wondering if you know which one is correct?