Home / 396,749.49-547,524-215,469.06

Finding the Fourth Proportional to 396,749.49, 547,524 and 215,469.06

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Solution

The fourth proportional to 396,749.49, 547,524 and 215,469.06 is: 297,352.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,749.49 : 547,524 = 215,469.06 : x
  2. Step 2: Convert to fraction form
    396,749.49/547,524 = 215,469.06/x
  3. Step 3: Cross multiply
    396,749.49x = 547,524 × 215,469.06
  4. Step 4: Simplify right side
    396,749.49x = 117,974,481,607.44
  5. Step 5: Solve for x
    x = 117,974,481,607.44/396,749.49
  6. Step 6: Final answer
    x = 297,352.57

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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.