Home / 396,909.28-547,732.61-215,619.76

Finding the Fourth Proportional to 396,909.28, 547,732.61 and 215,619.76

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Solution

The fourth proportional to 396,909.28, 547,732.61 and 215,619.76 is: 297,554.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,909.28 : 547,732.61 = 215,619.76 : x
  2. Step 2: Convert to fraction form
    396,909.28/547,732.61 = 215,619.76/x
  3. Step 3: Cross multiply
    396,909.28x = 547,732.61 × 215,619.76
  4. Step 4: Simplify right side
    396,909.28x = 118,101,971,173.71
  5. Step 5: Solve for x
    x = 118,101,971,173.71/396,909.28
  6. Step 6: Final answer
    x = 297,554.07

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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.