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Finding the Fourth Proportional to 218,885.39, 328,354.97 and 74,815.04

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Solution

The fourth proportional to 218,885.39, 328,354.97 and 74,815.04 is: 112,231.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,885.39 : 328,354.97 = 74,815.04 : x
  2. Step 2: Convert to fraction form
    218,885.39/328,354.97 = 74,815.04/x
  3. Step 3: Cross multiply
    218,885.39x = 328,354.97 × 74,815.04
  4. Step 4: Simplify right side
    218,885.39x = 24,565,890,661.56
  5. Step 5: Solve for x
    x = 24,565,890,661.56/218,885.39
  6. Step 6: Final answer
    x = 112,231.75

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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.