Home / 396,458.07-547,116.08-215,171.61

Finding the Fourth Proportional to 396,458.07, 547,116.08 and 215,171.61

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Solution

The fourth proportional to 396,458.07, 547,116.08 and 215,171.61 is: 296,938.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,458.07 : 547,116.08 = 215,171.61 : x
  2. Step 2: Convert to fraction form
    396,458.07/547,116.08 = 215,171.61/x
  3. Step 3: Cross multiply
    396,458.07x = 547,116.08 × 215,171.61
  4. Step 4: Simplify right side
    396,458.07x = 117,723,846,714.63
  5. Step 5: Solve for x
    x = 117,723,846,714.63/396,458.07
  6. Step 6: Final answer
    x = 296,938.96

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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.