Home / 283,781.28-391,605-162,839.76

Finding the Fourth Proportional to 283,781.28, 391,605 and 162,839.76

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Solution

The fourth proportional to 283,781.28, 391,605 and 162,839.76 is: 224,711.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,781.28 : 391,605 = 162,839.76 : x
  2. Step 2: Convert to fraction form
    283,781.28/391,605 = 162,839.76/x
  3. Step 3: Cross multiply
    283,781.28x = 391,605 × 162,839.76
  4. Step 4: Simplify right side
    283,781.28x = 63,768,864,214.80
  5. Step 5: Solve for x
    x = 63,768,864,214.80/283,781.28
  6. Step 6: Final answer
    x = 224,711.31

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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.