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Finding the Fourth Proportional to 218,839.60, 328,270.20 and 113,863.60

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Solution

The fourth proportional to 218,839.60, 328,270.20 and 113,863.60 is: 170,801.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,839.60 : 328,270.20 = 113,863.60 : x
  2. Step 2: Convert to fraction form
    218,839.60/328,270.20 = 113,863.60/x
  3. Step 3: Cross multiply
    218,839.60x = 328,270.20 × 113,863.60
  4. Step 4: Simplify right side
    218,839.60x = 37,378,026,744.72
  5. Step 5: Solve for x
    x = 37,378,026,744.72/218,839.60
  6. Step 6: Final answer
    x = 170,801.02

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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.