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Finding the Fourth Proportional to 396,409.26, 547,499.28 and 261,048.54

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Solution

The fourth proportional to 396,409.26, 547,499.28 and 261,048.54 is: 360,546.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,409.26 : 547,499.28 = 261,048.54 : x
  2. Step 2: Convert to fraction form
    396,409.26/547,499.28 = 261,048.54/x
  3. Step 3: Cross multiply
    396,409.26x = 547,499.28 × 261,048.54
  4. Step 4: Simplify right side
    396,409.26x = 142,923,887,695.05
  5. Step 5: Solve for x
    x = 142,923,887,695.05/396,409.26
  6. Step 6: Final answer
    x = 360,546.29

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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.