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Finding the Fourth Proportional to 396,008.33, 594,017.35 and 261,930.65

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Solution

The fourth proportional to 396,008.33, 594,017.35 and 261,930.65 is: 392,899.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,008.33 : 594,017.35 = 261,930.65 : x
  2. Step 2: Convert to fraction form
    396,008.33/594,017.35 = 261,930.65/x
  3. Step 3: Cross multiply
    396,008.33x = 594,017.35 × 261,930.65
  4. Step 4: Simplify right side
    396,008.33x = 155,591,346,971.86
  5. Step 5: Solve for x
    x = 155,591,346,971.86/396,008.33
  6. Step 6: Final answer
    x = 392,899.18

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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.