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Finding the Fourth Proportional to 198,954.79, 274,549.21 and 108,308.88

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Solution

The fourth proportional to 198,954.79, 274,549.21 and 108,308.88 is: 149,461.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,954.79 : 274,549.21 = 108,308.88 : x
  2. Step 2: Convert to fraction form
    198,954.79/274,549.21 = 108,308.88/x
  3. Step 3: Cross multiply
    198,954.79x = 274,549.21 × 108,308.88
  4. Step 4: Simplify right side
    198,954.79x = 29,736,117,439.98
  5. Step 5: Solve for x
    x = 29,736,117,439.98/198,954.79
  6. Step 6: Final answer
    x = 149,461.68

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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.