Finding the Fourth Proportional to 529,857.32, 731,207.99 and 288,142.17
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Solution
The fourth proportional to 529,857.32, 731,207.99 and 288,142.17 is: 397,638.85
Step by Step Solution
- Step 1: Write the proportion equation
529,857.32 : 731,207.99 = 288,142.17 : x - Step 2: Convert to fraction form
529,857.32/731,207.99 = 288,142.17/x - Step 3: Cross multiply
529,857.32x = 731,207.99 × 288,142.17 - Step 4: Simplify right side
529,857.32x = 210,691,855,519.23 - Step 5: Solve for x
x = 210,691,855,519.23/529,857.32 - Step 6: Final answer
x = 397,638.85
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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.