Finding the Fourth Proportional to 278,138.10, 417,207.15 and 267,251.70
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Solution
The fourth proportional to 278,138.10, 417,207.15 and 267,251.70 is: 400,877.55
Step by Step Solution
- Step 1: Write the proportion equation
278,138.10 : 417,207.15 = 267,251.70 : x - Step 2: Convert to fraction form
278,138.10/417,207.15 = 267,251.70/x - Step 3: Cross multiply
278,138.10x = 417,207.15 × 267,251.70 - Step 4: Simplify right side
278,138.10x = 111,499,320,089.66 - Step 5: Solve for x
x = 111,499,320,089.66/278,138.10 - Step 6: Final answer
x = 400,877.55
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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.