Home / 396,909.40-547,732.78-215,619.88

Finding the Fourth Proportional to 396,909.40, 547,732.78 and 215,619.88

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Solution

The fourth proportional to 396,909.40, 547,732.78 and 215,619.88 is: 297,554.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,909.40 : 547,732.78 = 215,619.88 : x
  2. Step 2: Convert to fraction form
    396,909.40/547,732.78 = 215,619.88/x
  3. Step 3: Cross multiply
    396,909.40x = 547,732.78 × 215,619.88
  4. Step 4: Simplify right side
    396,909.40x = 118,102,076,295.67
  5. Step 5: Solve for x
    x = 118,102,076,295.67/396,909.40
  6. Step 6: Final answer
    x = 297,554.24

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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.