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Finding the Fourth Proportional to 397,340.80, 595,233.60 and 239,099.20

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Solution

The fourth proportional to 397,340.80, 595,233.60 and 239,099.20 is: 358,180.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,340.80 : 595,233.60 = 239,099.20 : x
  2. Step 2: Convert to fraction form
    397,340.80/595,233.60 = 239,099.20/x
  3. Step 3: Cross multiply
    397,340.80x = 595,233.60 × 239,099.20
  4. Step 4: Simplify right side
    397,340.80x = 142,319,877,573.12
  5. Step 5: Solve for x
    x = 142,319,877,573.12/397,340.80
  6. Step 6: Final answer
    x = 358,180.88

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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.