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Finding the Fourth Proportional to 351,402.96, 527,099.78 and 85,165.79

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Solution

The fourth proportional to 351,402.96, 527,099.78 and 85,165.79 is: 127,747.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,402.96 : 527,099.78 = 85,165.79 : x
  2. Step 2: Convert to fraction form
    351,402.96/527,099.78 = 85,165.79/x
  3. Step 3: Cross multiply
    351,402.96x = 527,099.78 × 85,165.79
  4. Step 4: Simplify right side
    351,402.96x = 44,890,866,111.20
  5. Step 5: Solve for x
    x = 44,890,866,111.20/351,402.96
  6. Step 6: Final answer
    x = 127,747.55

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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.