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Finding the Fourth Proportional to 218,418.56, 327,627.45 and 68,671.91

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Solution

The fourth proportional to 218,418.56, 327,627.45 and 68,671.91 is: 103,007.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,418.56 : 327,627.45 = 68,671.91 : x
  2. Step 2: Convert to fraction form
    218,418.56/327,627.45 = 68,671.91/x
  3. Step 3: Cross multiply
    218,418.56x = 327,627.45 × 68,671.91
  4. Step 4: Simplify right side
    218,418.56x = 22,498,802,759.93
  5. Step 5: Solve for x
    x = 22,498,802,759.93/218,418.56
  6. Step 6: Final answer
    x = 103,007.74

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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.