Home / 396,469.31-547,128.17-215,181.23

Finding the Fourth Proportional to 396,469.31, 547,128.17 and 215,181.23

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Solution

The fourth proportional to 396,469.31, 547,128.17 and 215,181.23 is: 296,950.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,469.31 : 547,128.17 = 215,181.23 : x
  2. Step 2: Convert to fraction form
    396,469.31/547,128.17 = 215,181.23/x
  3. Step 3: Cross multiply
    396,469.31x = 547,128.17 × 215,181.23
  4. Step 4: Simplify right side
    396,469.31x = 117,731,714,200.03
  5. Step 5: Solve for x
    x = 117,731,714,200.03/396,469.31
  6. Step 6: Final answer
    x = 296,950.39

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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.