Home / 396,910.90-547,734.85-215,621.38

Finding the Fourth Proportional to 396,910.90, 547,734.85 and 215,621.38

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Solution

The fourth proportional to 396,910.90, 547,734.85 and 215,621.38 is: 297,556.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,910.90 : 547,734.85 = 215,621.38 : x
  2. Step 2: Convert to fraction form
    396,910.90/547,734.85 = 215,621.38/x
  3. Step 3: Cross multiply
    396,910.90x = 547,734.85 × 215,621.38
  4. Step 4: Simplify right side
    396,910.90x = 118,103,344,231.09
  5. Step 5: Solve for x
    x = 118,103,344,231.09/396,910.90
  6. Step 6: Final answer
    x = 297,556.31

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1.5x scale

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.