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Finding the Fourth Proportional to 396,441, 547,542.69 and 261,079.98

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Solution

The fourth proportional to 396,441, 547,542.69 and 261,079.98 is: 360,589.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,441 : 547,542.69 = 261,079.98 : x
  2. Step 2: Convert to fraction form
    396,441/547,542.69 = 261,079.98/x
  3. Step 3: Cross multiply
    396,441x = 547,542.69 × 261,079.98
  4. Step 4: Simplify right side
    396,441x = 142,952,431,522.01
  5. Step 5: Solve for x
    x = 142,952,431,522.01/396,441
  6. Step 6: Final answer
    x = 360,589.42

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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.