Finding the Fourth Proportional to 291,658.80, 402,489.18 and 157,522.80
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Solution
The fourth proportional to 291,658.80, 402,489.18 and 157,522.80 is: 217,381.48
Step by Step Solution
- Step 1: Write the proportion equation
291,658.80 : 402,489.18 = 157,522.80 : x - Step 2: Convert to fraction form
291,658.80/402,489.18 = 157,522.80/x - Step 3: Cross multiply
291,658.80x = 402,489.18 × 157,522.80 - Step 4: Simplify right side
291,658.80x = 63,401,222,603.30 - Step 5: Solve for x
x = 63,401,222,603.30/291,658.80 - Step 6: Final answer
x = 217,381.48
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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.