Home / 283,617.85-391,387.60-154,557.47

Finding the Fourth Proportional to 283,617.85, 391,387.60 and 154,557.47

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Solution

The fourth proportional to 283,617.85, 391,387.60 and 154,557.47 is: 213,286.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,617.85 : 391,387.60 = 154,557.47 : x
  2. Step 2: Convert to fraction form
    283,617.85/391,387.60 = 154,557.47/x
  3. Step 3: Cross multiply
    283,617.85x = 391,387.60 × 154,557.47
  4. Step 4: Simplify right side
    283,617.85x = 60,491,876,472.58
  5. Step 5: Solve for x
    x = 60,491,876,472.58/283,617.85
  6. Step 6: Final answer
    x = 213,286.57

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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.