Home / 381,990.16-572,974.89-129,268.95

Finding the Fourth Proportional to 381,990.16, 572,974.89 and 129,268.95

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Solution

The fourth proportional to 381,990.16, 572,974.89 and 129,268.95 is: 193,899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,990.16 : 572,974.89 = 129,268.95 : x
  2. Step 2: Convert to fraction form
    381,990.16/572,974.89 = 129,268.95/x
  3. Step 3: Cross multiply
    381,990.16x = 572,974.89 × 129,268.95
  4. Step 4: Simplify right side
    381,990.16x = 74,067,862,406.67
  5. Step 5: Solve for x
    x = 74,067,862,406.67/381,990.16
  6. Step 6: Final answer
    x = 193,899.92

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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.