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Finding the Fourth Proportional to 331,105.60, 496,312.80 and 181,115.20

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Solution

The fourth proportional to 331,105.60, 496,312.80 and 181,115.20 is: 271,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,105.60 : 496,312.80 = 181,115.20 : x
  2. Step 2: Convert to fraction form
    331,105.60/496,312.80 = 181,115.20/x
  3. Step 3: Cross multiply
    331,105.60x = 496,312.80 × 181,115.20
  4. Step 4: Simplify right side
    331,105.60x = 89,889,792,034.56
  5. Step 5: Solve for x
    x = 89,889,792,034.56/331,105.60
  6. Step 6: Final answer
    x = 271,483.76

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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.