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Finding the Fourth Proportional to 247,489.20, 371,233.80 and 89,722.80

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Solution

The fourth proportional to 247,489.20, 371,233.80 and 89,722.80 is: 134,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,489.20 : 371,233.80 = 89,722.80 : x
  2. Step 2: Convert to fraction form
    247,489.20/371,233.80 = 89,722.80/x
  3. Step 3: Cross multiply
    247,489.20x = 371,233.80 × 89,722.80
  4. Step 4: Simplify right side
    247,489.20x = 33,308,135,990.64
  5. Step 5: Solve for x
    x = 33,308,135,990.64/247,489.20
  6. Step 6: Final answer
    x = 134,584.20

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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.