Home / 396,816.31-547,610.49-215,531.79

Finding the Fourth Proportional to 396,816.31, 547,610.49 and 215,531.79

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Solution

The fourth proportional to 396,816.31, 547,610.49 and 215,531.79 is: 297,436.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,816.31 : 547,610.49 = 215,531.79 : x
  2. Step 2: Convert to fraction form
    396,816.31/547,610.49 = 215,531.79/x
  3. Step 3: Cross multiply
    396,816.31x = 547,610.49 × 215,531.79
  4. Step 4: Simplify right side
    396,816.31x = 118,027,469,132.48
  5. Step 5: Solve for x
    x = 118,027,469,132.48/396,816.31
  6. Step 6: Final answer
    x = 297,436.03

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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.