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Finding the Fourth Proportional to 351,338.43, 527,008.89 and 85,099.11

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Solution

The fourth proportional to 351,338.43, 527,008.89 and 85,099.11 is: 127,648.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,338.43 : 527,008.89 = 85,099.11 : x
  2. Step 2: Convert to fraction form
    351,338.43/527,008.89 = 85,099.11/x
  3. Step 3: Cross multiply
    351,338.43x = 527,008.89 × 85,099.11
  4. Step 4: Simplify right side
    351,338.43x = 44,847,987,501.09
  5. Step 5: Solve for x
    x = 44,847,987,501.09/351,338.43
  6. Step 6: Final answer
    x = 127,648.97

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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.