Finding the Fourth Proportional to 220,753.69, 331,250.14 and 170,931.09
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Solution
The fourth proportional to 220,753.69, 331,250.14 and 170,931.09 is: 256,489.26
Step by Step Solution
- Step 1: Write the proportion equation
220,753.69 : 331,250.14 = 170,931.09 : x - Step 2: Convert to fraction form
220,753.69/331,250.14 = 170,931.09/x - Step 3: Cross multiply
220,753.69x = 331,250.14 × 170,931.09 - Step 4: Simplify right side
220,753.69x = 56,620,948,948.70 - Step 5: Solve for x
x = 56,620,948,948.70/220,753.69 - Step 6: Final answer
x = 256,489.26
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.