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Finding the Fourth Proportional to 279,786.47, 419,556.24 and 80,061.39

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Solution

The fourth proportional to 279,786.47, 419,556.24 and 80,061.39 is: 120,056.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,786.47 : 419,556.24 = 80,061.39 : x
  2. Step 2: Convert to fraction form
    279,786.47/419,556.24 = 80,061.39/x
  3. Step 3: Cross multiply
    279,786.47x = 419,556.24 × 80,061.39
  4. Step 4: Simplify right side
    279,786.47x = 33,590,255,757.57
  5. Step 5: Solve for x
    x = 33,590,255,757.57/279,786.47
  6. Step 6: Final answer
    x = 120,056.76

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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.