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Finding the Fourth Proportional to 396,020.97, 594,021.65 and 115,540.65

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Solution

The fourth proportional to 396,020.97, 594,021.65 and 115,540.65 is: 173,308.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,020.97 : 594,021.65 = 115,540.65 : x
  2. Step 2: Convert to fraction form
    396,020.97/594,021.65 = 115,540.65/x
  3. Step 3: Cross multiply
    396,020.97x = 594,021.65 × 115,540.65
  4. Step 4: Simplify right side
    396,020.97x = 68,633,646,977.37
  5. Step 5: Solve for x
    x = 68,633,646,977.37/396,020.97
  6. Step 6: Final answer
    x = 173,308.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.