Finding the Fourth Proportional to 231,931.96, 320,010.65 and 135,077.02
Calculator
Solution
The fourth proportional to 231,931.96, 320,010.65 and 135,077.02 is: 186,373.99
Step by Step Solution
- Step 1: Write the proportion equation
231,931.96 : 320,010.65 = 135,077.02 : x - Step 2: Convert to fraction form
231,931.96/320,010.65 = 135,077.02/x - Step 3: Cross multiply
231,931.96x = 320,010.65 × 135,077.02 - Step 4: Simplify right side
231,931.96x = 43,226,084,001.39 - Step 5: Solve for x
x = 43,226,084,001.39/231,931.96 - Step 6: Final answer
x = 186,373.99
Related Problems
Find fourth proportional to 115,965.98, 160,005.32 and 67,538.51
Half scale
Find fourth proportional to 463,863.92, 640,021.30 and 270,154.04
Double scale
Find fourth proportional to 231,932.96, 320,012.03 and 135,078.02
Similar ratio
Find fourth proportional to 347,897.94, 480,015.97 and 202,615.53
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.