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Finding the Fourth Proportional to 331,442.80, 497,245.20 and 153,912.40

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Solution

The fourth proportional to 331,442.80, 497,245.20 and 153,912.40 is: 230,906.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,442.80 : 497,245.20 = 153,912.40 : x
  2. Step 2: Convert to fraction form
    331,442.80/497,245.20 = 153,912.40/x
  3. Step 3: Cross multiply
    331,442.80x = 497,245.20 × 153,912.40
  4. Step 4: Simplify right side
    331,442.80x = 76,532,202,120.48
  5. Step 5: Solve for x
    x = 76,532,202,120.48/331,442.80
  6. Step 6: Final answer
    x = 230,906.21

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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.