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Finding the Fourth Proportional to 285,949.87, 428,645.88 and 136,149.91

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Solution

The fourth proportional to 285,949.87, 428,645.88 and 136,149.91 is: 204,092.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,949.87 : 428,645.88 = 136,149.91 : x
  2. Step 2: Convert to fraction form
    285,949.87/428,645.88 = 136,149.91/x
  3. Step 3: Cross multiply
    285,949.87x = 428,645.88 × 136,149.91
  4. Step 4: Simplify right side
    285,949.87x = 58,360,096,912.26
  5. Step 5: Solve for x
    x = 58,360,096,912.26/285,949.87
  6. Step 6: Final answer
    x = 204,092.06

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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.