Home / 431,358.18-647,037.27-131,839.62

Finding the Fourth Proportional to 431,358.18, 647,037.27 and 131,839.62

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Solution

The fourth proportional to 431,358.18, 647,037.27 and 131,839.62 is: 197,759.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,358.18 : 647,037.27 = 131,839.62 : x
  2. Step 2: Convert to fraction form
    431,358.18/647,037.27 = 131,839.62/x
  3. Step 3: Cross multiply
    431,358.18x = 647,037.27 × 131,839.62
  4. Step 4: Simplify right side
    431,358.18x = 85,305,147,802.64
  5. Step 5: Solve for x
    x = 85,305,147,802.64/431,358.18
  6. Step 6: Final answer
    x = 197,759.43

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1.5x scale

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.