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Finding the Fourth Proportional to 279,763.86, 419,645.82 and 80,084.97

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Solution

The fourth proportional to 279,763.86, 419,645.82 and 80,084.97 is: 120,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,763.86 : 419,645.82 = 80,084.97 : x
  2. Step 2: Convert to fraction form
    279,763.86/419,645.82 = 80,084.97/x
  3. Step 3: Cross multiply
    279,763.86x = 419,645.82 × 80,084.97
  4. Step 4: Simplify right side
    279,763.86x = 33,607,322,905.33
  5. Step 5: Solve for x
    x = 33,607,322,905.33/279,763.86
  6. Step 6: Final answer
    x = 120,127.46

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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.