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Finding the Fourth Proportional to 280,542.03, 387,150.47 and 159,691.10

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Solution

The fourth proportional to 280,542.03, 387,150.47 and 159,691.10 is: 220,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,542.03 : 387,150.47 = 159,691.10 : x
  2. Step 2: Convert to fraction form
    280,542.03/387,150.47 = 159,691.10/x
  3. Step 3: Cross multiply
    280,542.03x = 387,150.47 × 159,691.10
  4. Step 4: Simplify right side
    280,542.03x = 61,824,481,685.61
  5. Step 5: Solve for x
    x = 61,824,481,685.61/280,542.03
  6. Step 6: Final answer
    x = 220,375.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.