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Finding the Fourth Proportional to 198,998.10, 298,497.15 and 115,017.30

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Solution

The fourth proportional to 198,998.10, 298,497.15 and 115,017.30 is: 172,525.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,998.10 : 298,497.15 = 115,017.30 : x
  2. Step 2: Convert to fraction form
    198,998.10/298,497.15 = 115,017.30/x
  3. Step 3: Cross multiply
    198,998.10x = 298,497.15 × 115,017.30
  4. Step 4: Simplify right side
    198,998.10x = 34,332,336,250.70
  5. Step 5: Solve for x
    x = 34,332,336,250.70/198,998.10
  6. Step 6: Final answer
    x = 172,525.95

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1.5x scale

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.