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Finding the Fourth Proportional to 272,439.96, 408,695.64 and 90,010.15

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Solution

The fourth proportional to 272,439.96, 408,695.64 and 90,010.15 is: 135,027.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,439.96 : 408,695.64 = 90,010.15 : x
  2. Step 2: Convert to fraction form
    272,439.96/408,695.64 = 90,010.15/x
  3. Step 3: Cross multiply
    272,439.96x = 408,695.64 × 90,010.15
  4. Step 4: Simplify right side
    272,439.96x = 36,786,757,306.69
  5. Step 5: Solve for x
    x = 36,786,757,306.69/272,439.96
  6. Step 6: Final answer
    x = 135,027.03

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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.