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Finding the Fourth Proportional to 494,772.33, 742,207.10 and 139,789.11

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Solution

The fourth proportional to 494,772.33, 742,207.10 and 139,789.11 is: 209,697.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,772.33 : 742,207.10 = 139,789.11 : x
  2. Step 2: Convert to fraction form
    494,772.33/742,207.10 = 139,789.11/x
  3. Step 3: Cross multiply
    494,772.33x = 742,207.10 × 139,789.11
  4. Step 4: Simplify right side
    494,772.33x = 103,752,469,245.74
  5. Step 5: Solve for x
    x = 103,752,469,245.74/494,772.33
  6. Step 6: Final answer
    x = 209,697.40

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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.