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Finding the Fourth Proportional to 216,862.80, 325,213.31 and 74,667.92

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Solution

The fourth proportional to 216,862.80, 325,213.31 and 74,667.92 is: 111,974.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,862.80 : 325,213.31 = 74,667.92 : x
  2. Step 2: Convert to fraction form
    216,862.80/325,213.31 = 74,667.92/x
  3. Step 3: Cross multiply
    216,862.80x = 325,213.31 × 74,667.92
  4. Step 4: Simplify right side
    216,862.80x = 24,282,999,414.61
  5. Step 5: Solve for x
    x = 24,282,999,414.61/216,862.80
  6. Step 6: Final answer
    x = 111,974.02

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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.