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Finding the Fourth Proportional to 381,380.08, 571,847.64 and 115,060.72

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Solution

The fourth proportional to 381,380.08, 571,847.64 and 115,060.72 is: 172,523.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,380.08 : 571,847.64 = 115,060.72 : x
  2. Step 2: Convert to fraction form
    381,380.08/571,847.64 = 115,060.72/x
  3. Step 3: Cross multiply
    381,380.08x = 571,847.64 × 115,060.72
  4. Step 4: Simplify right side
    381,380.08x = 65,797,201,188.70
  5. Step 5: Solve for x
    x = 65,797,201,188.70/381,380.08
  6. Step 6: Final answer
    x = 172,523.96

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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.