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Finding the Fourth Proportional to 198,957.46, 298,406.76 and 72,568.12

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Solution

The fourth proportional to 198,957.46, 298,406.76 and 72,568.12 is: 108,841.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,957.46 : 298,406.76 = 72,568.12 : x
  2. Step 2: Convert to fraction form
    198,957.46/298,406.76 = 72,568.12/x
  3. Step 3: Cross multiply
    198,957.46x = 298,406.76 × 72,568.12
  4. Step 4: Simplify right side
    198,957.46x = 21,654,817,568.49
  5. Step 5: Solve for x
    x = 21,654,817,568.49/198,957.46
  6. Step 6: Final answer
    x = 108,841.45

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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.