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Finding the Fourth Proportional to 502,631.62, 753,523.54 and 218,107.78

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Solution

The fourth proportional to 502,631.62, 753,523.54 and 218,107.78 is: 326,977.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,631.62 : 753,523.54 = 218,107.78 : x
  2. Step 2: Convert to fraction form
    502,631.62/753,523.54 = 218,107.78/x
  3. Step 3: Cross multiply
    502,631.62x = 753,523.54 × 218,107.78
  4. Step 4: Simplify right side
    502,631.62x = 164,349,346,487.14
  5. Step 5: Solve for x
    x = 164,349,346,487.14/502,631.62
  6. Step 6: Final answer
    x = 326,977.73

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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.