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Finding the Fourth Proportional to 351,351.61, 527,025.65 and 85,112.15

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Solution

The fourth proportional to 351,351.61, 527,025.65 and 85,112.15 is: 127,667.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,351.61 : 527,025.65 = 85,112.15 : x
  2. Step 2: Convert to fraction form
    351,351.61/527,025.65 = 85,112.15/x
  3. Step 3: Cross multiply
    351,351.61x = 527,025.65 × 85,112.15
  4. Step 4: Simplify right side
    351,351.61x = 44,856,283,115.96
  5. Step 5: Solve for x
    x = 44,856,283,115.96/351,351.61
  6. Step 6: Final answer
    x = 127,667.79

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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.