So...
Today is day one for the new regimen. I came home from flying today at about noon, talked to my wife about our new feeding plan (she absolutely agreed to it), and pulled the food bowl off the floor. I looked up the recommended amount of food for each of the dogs for that particular brand and flavor (IAMS ProActive Health, Weight Control), and set up the feeding schedule. The two normal-weight dogs are getting the recommended amount, and the overweight guy is getting a slightly reduced amount from what was recommended.
The good thing for me is they all LOVE carrots.
Camping at the beach with two of my Porsches and the dogs...

The third dog is somewhere out of the picture.