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Finding the Fourth Proportional to 491,397.72, 737,100.68 and 136,439.42

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Solution

The fourth proportional to 491,397.72, 737,100.68 and 136,439.42 is: 204,660.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,397.72 : 737,100.68 = 136,439.42 : x
  2. Step 2: Convert to fraction form
    491,397.72/737,100.68 = 136,439.42/x
  3. Step 3: Cross multiply
    491,397.72x = 737,100.68 × 136,439.42
  4. Step 4: Simplify right side
    491,397.72x = 100,569,584,893.11
  5. Step 5: Solve for x
    x = 100,569,584,893.11/491,397.72
  6. Step 6: Final answer
    x = 204,660.26

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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.