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Finding the Fourth Proportional to 198,856.80, 298,284.96 and 136,337.76

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Solution

The fourth proportional to 198,856.80, 298,284.96 and 136,337.76 is: 204,506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,856.80 : 298,284.96 = 136,337.76 : x
  2. Step 2: Convert to fraction form
    198,856.80/298,284.96 = 136,337.76/x
  3. Step 3: Cross multiply
    198,856.80x = 298,284.96 × 136,337.76
  4. Step 4: Simplify right side
    198,856.80x = 40,667,503,288.09
  5. Step 5: Solve for x
    x = 40,667,503,288.09/198,856.80
  6. Step 6: Final answer
    x = 204,506.48

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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.