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Finding the Fourth Proportional to 198,910.80, 298,038.15 and 165,449.70

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Solution

The fourth proportional to 198,910.80, 298,038.15 and 165,449.70 is: 247,901.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,910.80 : 298,038.15 = 165,449.70 : x
  2. Step 2: Convert to fraction form
    198,910.80/298,038.15 = 165,449.70/x
  3. Step 3: Cross multiply
    198,910.80x = 298,038.15 × 165,449.70
  4. Step 4: Simplify right side
    198,910.80x = 49,310,322,506.06
  5. Step 5: Solve for x
    x = 49,310,322,506.06/198,910.80
  6. Step 6: Final answer
    x = 247,901.69

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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.