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Finding the Fourth Proportional to 493,640.73, 740,488.58 and 138,626.94

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Solution

The fourth proportional to 493,640.73, 740,488.58 and 138,626.94 is: 207,948.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,640.73 : 740,488.58 = 138,626.94 : x
  2. Step 2: Convert to fraction form
    493,640.73/740,488.58 = 138,626.94/x
  3. Step 3: Cross multiply
    493,640.73x = 740,488.58 × 138,626.94
  4. Step 4: Simplify right side
    493,640.73x = 102,651,665,257.21
  5. Step 5: Solve for x
    x = 102,651,665,257.21/493,640.73
  6. Step 6: Final answer
    x = 207,948.13

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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.