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Finding the Fourth Proportional to 338,011.70, 506,991.15 and 88,687.22

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Solution

The fourth proportional to 338,011.70, 506,991.15 and 88,687.22 is: 133,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,011.70 : 506,991.15 = 88,687.22 : x
  2. Step 2: Convert to fraction form
    338,011.70/506,991.15 = 88,687.22/x
  3. Step 3: Cross multiply
    338,011.70x = 506,991.15 × 88,687.22
  4. Step 4: Simplify right side
    338,011.70x = 44,963,635,658.10
  5. Step 5: Solve for x
    x = 44,963,635,658.10/338,011.70
  6. Step 6: Final answer
    x = 133,023.90

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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.