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Finding the Fourth Proportional to 218,418.38, 327,627.29 and 68,671.74

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Solution

The fourth proportional to 218,418.38, 327,627.29 and 68,671.74 is: 103,007.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,418.38 : 327,627.29 = 68,671.74 : x
  2. Step 2: Convert to fraction form
    218,418.38/327,627.29 = 68,671.74/x
  3. Step 3: Cross multiply
    218,418.38x = 327,627.29 × 68,671.74
  4. Step 4: Simplify right side
    218,418.38x = 22,498,736,247.46
  5. Step 5: Solve for x
    x = 22,498,736,247.46/218,418.38
  6. Step 6: Final answer
    x = 103,007.53

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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.