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Finding the Fourth Proportional to 198,958.82, 274,560.44 and 108,315.56

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Solution

The fourth proportional to 198,958.82, 274,560.44 and 108,315.56 is: 149,473.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,958.82 : 274,560.44 = 108,315.56 : x
  2. Step 2: Convert to fraction form
    198,958.82/274,560.44 = 108,315.56/x
  3. Step 3: Cross multiply
    198,958.82x = 274,560.44 × 108,315.56
  4. Step 4: Simplify right side
    198,958.82x = 29,739,167,812.45
  5. Step 5: Solve for x
    x = 29,739,167,812.45/198,958.82
  6. Step 6: Final answer
    x = 149,473.99

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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.