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Finding the Fourth Proportional to 331,147.60, 496,440.60 and 120,662.80

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Solution

The fourth proportional to 331,147.60, 496,440.60 and 120,662.80 is: 180,891.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,147.60 : 496,440.60 = 120,662.80 : x
  2. Step 2: Convert to fraction form
    331,147.60/496,440.60 = 120,662.80/x
  3. Step 3: Cross multiply
    331,147.60x = 496,440.60 × 120,662.80
  4. Step 4: Simplify right side
    331,147.60x = 59,901,912,829.68
  5. Step 5: Solve for x
    x = 59,901,912,829.68/331,147.60
  6. Step 6: Final answer
    x = 180,891.88

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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.