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Finding the Fourth Proportional to 269,723.80, 404,682.90 and 112,065.40

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Solution

The fourth proportional to 269,723.80, 404,682.90 and 112,065.40 is: 168,138.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,723.80 : 404,682.90 = 112,065.40 : x
  2. Step 2: Convert to fraction form
    269,723.80/404,682.90 = 112,065.40/x
  3. Step 3: Cross multiply
    269,723.80x = 404,682.90 × 112,065.40
  4. Step 4: Simplify right side
    269,723.80x = 45,350,951,061.66
  5. Step 5: Solve for x
    x = 45,350,951,061.66/269,723.80
  6. Step 6: Final answer
    x = 168,138.48

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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.