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Finding the Fourth Proportional to 399,042.80, 597,786.60 and 240,801.20

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Solution

The fourth proportional to 399,042.80, 597,786.60 and 240,801.20 is: 360,732.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,042.80 : 597,786.60 = 240,801.20 : x
  2. Step 2: Convert to fraction form
    399,042.80/597,786.60 = 240,801.20/x
  3. Step 3: Cross multiply
    399,042.80x = 597,786.60 × 240,801.20
  4. Step 4: Simplify right side
    399,042.80x = 143,947,730,623.92
  5. Step 5: Solve for x
    x = 143,947,730,623.92/399,042.80
  6. Step 6: Final answer
    x = 360,732.56

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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.