Home / 396,710.72-547,458.82-215,421.04

Finding the Fourth Proportional to 396,710.72, 547,458.82 and 215,421.04

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Solution

The fourth proportional to 396,710.72, 547,458.82 and 215,421.04 is: 297,279.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,710.72 : 547,458.82 = 215,421.04 : x
  2. Step 2: Convert to fraction form
    396,710.72/547,458.82 = 215,421.04/x
  3. Step 3: Cross multiply
    396,710.72x = 547,458.82 × 215,421.04
  4. Step 4: Simplify right side
    396,710.72x = 117,934,149,730.22
  5. Step 5: Solve for x
    x = 117,934,149,730.22/396,710.72
  6. Step 6: Final answer
    x = 297,279.97

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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.