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Finding the Fourth Proportional to 640,108.91, 960,306.36 and 240,753.15

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Solution

The fourth proportional to 640,108.91, 960,306.36 and 240,753.15 is: 361,183.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,108.91 : 960,306.36 = 240,753.15 : x
  2. Step 2: Convert to fraction form
    640,108.91/960,306.36 = 240,753.15/x
  3. Step 3: Cross multiply
    640,108.91x = 960,306.36 × 240,753.15
  4. Step 4: Simplify right side
    640,108.91x = 231,196,781,135.03
  5. Step 5: Solve for x
    x = 231,196,781,135.03/640,108.91
  6. Step 6: Final answer
    x = 361,183.51

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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.