Home / 396,581.36-547,079.54-253,190.70

Finding the Fourth Proportional to 396,581.36, 547,079.54 and 253,190.70

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Solution

The fourth proportional to 396,581.36, 547,079.54 and 253,190.70 is: 349,273.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,581.36 : 547,079.54 = 253,190.70 : x
  2. Step 2: Convert to fraction form
    396,581.36/547,079.54 = 253,190.70/x
  3. Step 3: Cross multiply
    396,581.36x = 547,079.54 × 253,190.70
  4. Step 4: Simplify right side
    396,581.36x = 138,515,450,422.33
  5. Step 5: Solve for x
    x = 138,515,450,422.33/396,581.36
  6. Step 6: Final answer
    x = 349,273.73

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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.