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Finding the Fourth Proportional to 285,517.70, 428,276.55 and 88,500.10

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Solution

The fourth proportional to 285,517.70, 428,276.55 and 88,500.10 is: 132,750.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,517.70 : 428,276.55 = 88,500.10 : x
  2. Step 2: Convert to fraction form
    285,517.70/428,276.55 = 88,500.10/x
  3. Step 3: Cross multiply
    285,517.70x = 428,276.55 × 88,500.10
  4. Step 4: Simplify right side
    285,517.70x = 37,902,517,502.66
  5. Step 5: Solve for x
    x = 37,902,517,502.66/285,517.70
  6. Step 6: Final answer
    x = 132,750.15

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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.