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Finding the Fourth Proportional to 396,680.80, 547,282.69 and 253,524.64

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Solution

The fourth proportional to 396,680.80, 547,282.69 and 253,524.64 is: 349,776.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,680.80 : 547,282.69 = 253,524.64 : x
  2. Step 2: Convert to fraction form
    396,680.80/547,282.69 = 253,524.64/x
  3. Step 3: Cross multiply
    396,680.80x = 547,282.69 × 253,524.64
  4. Step 4: Simplify right side
    396,680.80x = 138,749,646,960.48
  5. Step 5: Solve for x
    x = 138,749,646,960.48/396,680.80
  6. Step 6: Final answer
    x = 349,776.56

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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.