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Finding the Fourth Proportional to 218,079.75, 327,119.28 and 68,331.53

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Solution

The fourth proportional to 218,079.75, 327,119.28 and 68,331.53 is: 102,497.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,079.75 : 327,119.28 = 68,331.53 : x
  2. Step 2: Convert to fraction form
    218,079.75/327,119.28 = 68,331.53/x
  3. Step 3: Cross multiply
    218,079.75x = 327,119.28 × 68,331.53
  4. Step 4: Simplify right side
    218,079.75x = 22,352,560,229.76
  5. Step 5: Solve for x
    x = 22,352,560,229.76/218,079.75
  6. Step 6: Final answer
    x = 102,497.19

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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.