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Finding the Fourth Proportional to 396,991.74, 547,873.11 and 227,221.98

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Solution

The fourth proportional to 396,991.74, 547,873.11 and 227,221.98 is: 313,580.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,991.74 : 547,873.11 = 227,221.98 : x
  2. Step 2: Convert to fraction form
    396,991.74/547,873.11 = 227,221.98/x
  3. Step 3: Cross multiply
    396,991.74x = 547,873.11 × 227,221.98
  4. Step 4: Simplify right side
    396,991.74x = 124,488,812,842.96
  5. Step 5: Solve for x
    x = 124,488,812,842.96/396,991.74
  6. Step 6: Final answer
    x = 313,580.36

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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.