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Finding the Fourth Proportional to 198,994.67, 274,606.25 and 108,349.90

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Solution

The fourth proportional to 198,994.67, 274,606.25 and 108,349.90 is: 149,519.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,994.67 : 274,606.25 = 108,349.90 : x
  2. Step 2: Convert to fraction form
    198,994.67/274,606.25 = 108,349.90/x
  3. Step 3: Cross multiply
    198,994.67x = 274,606.25 × 108,349.90
  4. Step 4: Simplify right side
    198,994.67x = 29,753,560,652.74
  5. Step 5: Solve for x
    x = 29,753,560,652.74/198,994.67
  6. Step 6: Final answer
    x = 149,519.38

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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.