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Finding the Fourth Proportional to 381,018.96, 571,790.88 and 131,700.96

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Solution

The fourth proportional to 381,018.96, 571,790.88 and 131,700.96 is: 197,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,018.96 : 571,790.88 = 131,700.96 : x
  2. Step 2: Convert to fraction form
    381,018.96/571,790.88 = 131,700.96/x
  3. Step 3: Cross multiply
    381,018.96x = 571,790.88 × 131,700.96
  4. Step 4: Simplify right side
    381,018.96x = 75,305,407,815.24
  5. Step 5: Solve for x
    x = 75,305,407,815.24/381,018.96
  6. Step 6: Final answer
    x = 197,642.15

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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.