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Finding the Fourth Proportional to 218,568.73, 327,824.38 and 68,809.80

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Solution

The fourth proportional to 218,568.73, 327,824.38 and 68,809.80 is: 103,205.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,568.73 : 327,824.38 = 68,809.80 : x
  2. Step 2: Convert to fraction form
    218,568.73/327,824.38 = 68,809.80/x
  3. Step 3: Cross multiply
    218,568.73x = 327,824.38 × 68,809.80
  4. Step 4: Simplify right side
    218,568.73x = 22,557,529,850.90
  5. Step 5: Solve for x
    x = 22,557,529,850.90/218,568.73
  6. Step 6: Final answer
    x = 103,205.66

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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.