Home / 396,856.20-547,671.75-215,578.50

Finding the Fourth Proportional to 396,856.20, 547,671.75 and 215,578.50

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Solution

The fourth proportional to 396,856.20, 547,671.75 and 215,578.50 is: 297,503.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,856.20 : 547,671.75 = 215,578.50 : x
  2. Step 2: Convert to fraction form
    396,856.20/547,671.75 = 215,578.50/x
  3. Step 3: Cross multiply
    396,856.20x = 547,671.75 × 215,578.50
  4. Step 4: Simplify right side
    396,856.20x = 118,066,253,279.48
  5. Step 5: Solve for x
    x = 118,066,253,279.48/396,856.20
  6. Step 6: Final answer
    x = 297,503.87

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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.