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Finding the Fourth Proportional to 269,998.40, 404,920.20 and 80,450.84

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Solution

The fourth proportional to 269,998.40, 404,920.20 and 80,450.84 is: 120,653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,998.40 : 404,920.20 = 80,450.84 : x
  2. Step 2: Convert to fraction form
    269,998.40/404,920.20 = 80,450.84/x
  3. Step 3: Cross multiply
    269,998.40x = 404,920.20 × 80,450.84
  4. Step 4: Simplify right side
    269,998.40x = 32,576,170,222.97
  5. Step 5: Solve for x
    x = 32,576,170,222.97/269,998.40
  6. Step 6: Final answer
    x = 120,653.20

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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.