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Finding the Fourth Proportional to 397,454.80, 595,404.60 and 239,213.20

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Solution

The fourth proportional to 397,454.80, 595,404.60 and 239,213.20 is: 358,351.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,454.80 : 595,404.60 = 239,213.20 : x
  2. Step 2: Convert to fraction form
    397,454.80/595,404.60 = 239,213.20/x
  3. Step 3: Cross multiply
    397,454.80x = 595,404.60 × 239,213.20
  4. Step 4: Simplify right side
    397,454.80x = 142,428,639,660.72
  5. Step 5: Solve for x
    x = 142,428,639,660.72/397,454.80
  6. Step 6: Final answer
    x = 358,351.79

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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.