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Finding the Fourth Proportional to 267,195.78, 400,693.30 and 87,239.16

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Solution

The fourth proportional to 267,195.78, 400,693.30 and 87,239.16 is: 130,825.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,195.78 : 400,693.30 = 87,239.16 : x
  2. Step 2: Convert to fraction form
    267,195.78/400,693.30 = 87,239.16/x
  3. Step 3: Cross multiply
    267,195.78x = 400,693.30 × 87,239.16
  4. Step 4: Simplify right side
    267,195.78x = 34,956,146,691.53
  5. Step 5: Solve for x
    x = 34,956,146,691.53/267,195.78
  6. Step 6: Final answer
    x = 130,825.97

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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.