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Finding the Fourth Proportional to 267,743, 401,615.88 and 90,251.54

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Solution

The fourth proportional to 267,743, 401,615.88 and 90,251.54 is: 135,377.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,743 : 401,615.88 = 90,251.54 : x
  2. Step 2: Convert to fraction form
    267,743/401,615.88 = 90,251.54/x
  3. Step 3: Cross multiply
    267,743x = 401,615.88 × 90,251.54
  4. Step 4: Simplify right side
    267,743x = 36,246,451,658.46
  5. Step 5: Solve for x
    x = 36,246,451,658.46/267,743
  6. Step 6: Final answer
    x = 135,377.78

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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.