Finding the Fourth Proportional to 280,414.20, 420,621.30 and 93,425.70
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Solution
The fourth proportional to 280,414.20, 420,621.30 and 93,425.70 is: 140,138.55
Step by Step Solution
- Step 1: Write the proportion equation
280,414.20 : 420,621.30 = 93,425.70 : x - Step 2: Convert to fraction form
280,414.20/420,621.30 = 93,425.70/x - Step 3: Cross multiply
280,414.20x = 420,621.30 × 93,425.70 - Step 4: Simplify right side
280,414.20x = 39,296,839,387.41 - Step 5: Solve for x
x = 39,296,839,387.41/280,414.20 - Step 6: Final answer
x = 140,138.55
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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.