Finding the Fourth Proportional to 257,489.80, 386,234.70 and 253,115.80
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Solution
The fourth proportional to 257,489.80, 386,234.70 and 253,115.80 is: 379,673.70
Step by Step Solution
- Step 1: Write the proportion equation
257,489.80 : 386,234.70 = 253,115.80 : x - Step 2: Convert to fraction form
257,489.80/386,234.70 = 253,115.80/x - Step 3: Cross multiply
257,489.80x = 386,234.70 × 253,115.80 - Step 4: Simplify right side
257,489.80x = 97,762,105,078.26 - Step 5: Solve for x
x = 97,762,105,078.26/257,489.80 - Step 6: Final answer
x = 379,673.70
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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.