How is it that the Sun tide is 46 percent of the Moon tide?

The tidal force difference is the mass ratio times the cube of the distance ratio. For M(sun) = 2 x 10^30 kilograms, M(Moon) = 7.4 x 10^22 kilograms and d(moon) = 380,000 kilometers and d(sun) = 150 million kilometers, this gives you

       30                  3
(2 x 10   )     ( 380,000 )          5
------------ x ----------------   = ---   or about 0.46
         22                  3      11
(7.4 x 10  )    (150 million)