Finding the Fourth Proportional to 291,805.28, 402,691.12 and 157,669.28
Calculator
Solution
The fourth proportional to 291,805.28, 402,691.12 and 157,669.28 is: 217,583.52
Step by Step Solution
- Step 1: Write the proportion equation
291,805.28 : 402,691.12 = 157,669.28 : x - Step 2: Convert to fraction form
291,805.28/402,691.12 = 157,669.28/x - Step 3: Cross multiply
291,805.28x = 402,691.12 × 157,669.28 - Step 4: Simplify right side
291,805.28x = 63,492,018,952.79 - Step 5: Solve for x
x = 63,492,018,952.79/291,805.28 - Step 6: Final answer
x = 217,583.52
Related Problems
Find fourth proportional to 145,902.64, 201,345.56 and 78,834.64
Half scale
Find fourth proportional to 583,610.56, 805,382.24 and 315,338.56
Double scale
Find fourth proportional to 291,806.28, 402,692.50 and 157,670.28
Similar ratio
Find fourth proportional to 437,707.92, 604,036.68 and 236,503.92
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.