Home / 381,944.82-572,979.21-129,240.84

Finding the Fourth Proportional to 381,944.82, 572,979.21 and 129,240.84

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Solution

The fourth proportional to 381,944.82, 572,979.21 and 129,240.84 is: 193,882.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,944.82 : 572,979.21 = 129,240.84 : x
  2. Step 2: Convert to fraction form
    381,944.82/572,979.21 = 129,240.84/x
  3. Step 3: Cross multiply
    381,944.82x = 572,979.21 × 129,240.84
  4. Step 4: Simplify right side
    381,944.82x = 74,052,314,402.94
  5. Step 5: Solve for x
    x = 74,052,314,402.94/381,944.82
  6. Step 6: Final answer
    x = 193,882.23

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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.