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Finding the Fourth Proportional to 199,324.40, 298,980.12 and 80,960.72

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Solution

The fourth proportional to 199,324.40, 298,980.12 and 80,960.72 is: 121,438.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,324.40 : 298,980.12 = 80,960.72 : x
  2. Step 2: Convert to fraction form
    199,324.40/298,980.12 = 80,960.72/x
  3. Step 3: Cross multiply
    199,324.40x = 298,980.12 × 80,960.72
  4. Step 4: Simplify right side
    199,324.40x = 24,205,645,780.89
  5. Step 5: Solve for x
    x = 24,205,645,780.89/199,324.40
  6. Step 6: Final answer
    x = 121,438.45

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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.