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Finding the Fourth Proportional to 396,992.06, 547,851.07 and 215,704.46

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Solution

The fourth proportional to 396,992.06, 547,851.07 and 215,704.46 is: 297,673.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,992.06 : 547,851.07 = 215,704.46 : x
  2. Step 2: Convert to fraction form
    396,992.06/547,851.07 = 215,704.46/x
  3. Step 3: Cross multiply
    396,992.06x = 547,851.07 × 215,704.46
  4. Step 4: Simplify right side
    396,992.06x = 118,173,917,760.29
  5. Step 5: Solve for x
    x = 118,173,917,760.29/396,992.06
  6. Step 6: Final answer
    x = 297,673.25

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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.