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Finding the Fourth Proportional to 206,472.84, 309,847.58 and 88,171.88

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Solution

The fourth proportional to 206,472.84, 309,847.58 and 88,171.88 is: 132,316.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,472.84 : 309,847.58 = 88,171.88 : x
  2. Step 2: Convert to fraction form
    206,472.84/309,847.58 = 88,171.88/x
  3. Step 3: Cross multiply
    206,472.84x = 309,847.58 × 88,171.88
  4. Step 4: Simplify right side
    206,472.84x = 27,319,843,642.05
  5. Step 5: Solve for x
    x = 27,319,843,642.05/206,472.84
  6. Step 6: Final answer
    x = 132,316.89

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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.