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Finding the Fourth Proportional to 396,954.24, 547,793.89 and 215,667.66

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Solution

The fourth proportional to 396,954.24, 547,793.89 and 215,667.66 is: 297,619.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,954.24 : 547,793.89 = 215,667.66 : x
  2. Step 2: Convert to fraction form
    396,954.24/547,793.89 = 215,667.66/x
  3. Step 3: Cross multiply
    396,954.24x = 547,793.89 × 215,667.66
  4. Step 4: Simplify right side
    396,954.24x = 118,141,426,418.60
  5. Step 5: Solve for x
    x = 118,141,426,418.60/396,954.24
  6. Step 6: Final answer
    x = 297,619.76

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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.