Home / 396,636.31-547,358.09-215,348.26

Finding the Fourth Proportional to 396,636.31, 547,358.09 and 215,348.26

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Solution

The fourth proportional to 396,636.31, 547,358.09 and 215,348.26 is: 297,180.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,636.31 : 547,358.09 = 215,348.26 : x
  2. Step 2: Convert to fraction form
    396,636.31/547,358.09 = 215,348.26/x
  3. Step 3: Cross multiply
    396,636.31x = 547,358.09 × 215,348.26
  4. Step 4: Simplify right side
    396,636.31x = 117,872,612,578.82
  5. Step 5: Solve for x
    x = 117,872,612,578.82/396,636.31
  6. Step 6: Final answer
    x = 297,180.59

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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.