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Finding the Fourth Proportional to 399,044.80, 597,789.60 and 240,803.20

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Solution

The fourth proportional to 399,044.80, 597,789.60 and 240,803.20 is: 360,735.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,044.80 : 597,789.60 = 240,803.20 : x
  2. Step 2: Convert to fraction form
    399,044.80/597,789.60 = 240,803.20/x
  3. Step 3: Cross multiply
    399,044.80x = 597,789.60 × 240,803.20
  4. Step 4: Simplify right side
    399,044.80x = 143,949,648,606.72
  5. Step 5: Solve for x
    x = 143,949,648,606.72/399,044.80
  6. Step 6: Final answer
    x = 360,735.56

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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.