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Finding the Fourth Proportional to 381,353.76, 572,034.69 and 115,116.48

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Solution

The fourth proportional to 381,353.76, 572,034.69 and 115,116.48 is: 172,675.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,353.76 : 572,034.69 = 115,116.48 : x
  2. Step 2: Convert to fraction form
    381,353.76/572,034.69 = 115,116.48/x
  3. Step 3: Cross multiply
    381,353.76x = 572,034.69 × 115,116.48
  4. Step 4: Simplify right side
    381,353.76x = 65,850,619,950.69
  5. Step 5: Solve for x
    x = 65,850,619,950.69/381,353.76
  6. Step 6: Final answer
    x = 172,675.94

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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.