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Finding the Fourth Proportional to 279,497.78, 419,418.99 and 179,721.62

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Solution

The fourth proportional to 279,497.78, 419,418.99 and 179,721.62 is: 269,693.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,497.78 : 419,418.99 = 179,721.62 : x
  2. Step 2: Convert to fraction form
    279,497.78/419,418.99 = 179,721.62/x
  3. Step 3: Cross multiply
    279,497.78x = 419,418.99 × 179,721.62
  4. Step 4: Simplify right side
    279,497.78x = 75,378,660,341.56
  5. Step 5: Solve for x
    x = 75,378,660,341.56/279,497.78
  6. Step 6: Final answer
    x = 269,693.23

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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.