Finding the Fourth Proportional to 396,599.87, 547,307.84 and 215,311.55
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Solution
The fourth proportional to 396,599.87, 547,307.84 and 215,311.55 is: 297,129.94
Step by Step Solution
- Step 1: Write the proportion equation
396,599.87 : 547,307.84 = 215,311.55 : x - Step 2: Convert to fraction form
396,599.87/547,307.84 = 215,311.55/x - Step 3: Cross multiply
396,599.87x = 547,307.84 × 215,311.55 - Step 4: Simplify right side
396,599.87x = 117,841,695,544.46 - Step 5: Solve for x
x = 117,841,695,544.46/396,599.87 - Step 6: Final answer
x = 297,129.94
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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.