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Finding the Fourth Proportional to 198,957.96, 298,407.51 and 72,568.62

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Solution

The fourth proportional to 198,957.96, 298,407.51 and 72,568.62 is: 108,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,957.96 : 298,407.51 = 72,568.62 : x
  2. Step 2: Convert to fraction form
    198,957.96/298,407.51 = 72,568.62/x
  3. Step 3: Cross multiply
    198,957.96x = 298,407.51 × 72,568.62
  4. Step 4: Simplify right side
    198,957.96x = 21,655,021,198.34
  5. Step 5: Solve for x
    x = 21,655,021,198.34/198,957.96
  6. Step 6: Final answer
    x = 108,842.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.