Home / 396,709.25-547,446.80-215,417.88

Finding the Fourth Proportional to 396,709.25, 547,446.80 and 215,417.88

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Solution

The fourth proportional to 396,709.25, 547,446.80 and 215,417.88 is: 297,270.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,709.25 : 547,446.80 = 215,417.88 : x
  2. Step 2: Convert to fraction form
    396,709.25/547,446.80 = 215,417.88/x
  3. Step 3: Cross multiply
    396,709.25x = 547,446.80 × 215,417.88
  4. Step 4: Simplify right side
    396,709.25x = 117,929,829,607.33
  5. Step 5: Solve for x
    x = 117,929,829,607.33/396,709.25
  6. Step 6: Final answer
    x = 297,270.18

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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.