Home / 218,837.33-328,290.97-92,478.78

Finding the Fourth Proportional to 218,837.33, 328,290.97 and 92,478.78

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Solution

The fourth proportional to 218,837.33, 328,290.97 and 92,478.78 is: 138,732.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,837.33 : 328,290.97 = 92,478.78 : x
  2. Step 2: Convert to fraction form
    218,837.33/328,290.97 = 92,478.78/x
  3. Step 3: Cross multiply
    218,837.33x = 328,290.97 × 92,478.78
  4. Step 4: Simplify right side
    218,837.33x = 30,359,948,390.62
  5. Step 5: Solve for x
    x = 30,359,948,390.62/218,837.33
  6. Step 6: Final answer
    x = 138,732.95

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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.