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Finding the Fourth Proportional to 386,763.73, 580,144.23 and 120,524.43

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Solution

The fourth proportional to 386,763.73, 580,144.23 and 120,524.43 is: 180,786.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,763.73 : 580,144.23 = 120,524.43 : x
  2. Step 2: Convert to fraction form
    386,763.73/580,144.23 = 120,524.43/x
  3. Step 3: Cross multiply
    386,763.73x = 580,144.23 × 120,524.43
  4. Step 4: Simplify right side
    386,763.73x = 69,921,550,463.00
  5. Step 5: Solve for x
    x = 69,921,550,463.00/386,763.73
  6. Step 6: Final answer
    x = 180,786.21

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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.