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Finding the Fourth Proportional to 279,874.76, 419,604.78 and 169,040.84

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Solution

The fourth proportional to 279,874.76, 419,604.78 and 169,040.84 is: 253,436.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,874.76 : 419,604.78 = 169,040.84 : x
  2. Step 2: Convert to fraction form
    279,874.76/419,604.78 = 169,040.84/x
  3. Step 3: Cross multiply
    279,874.76x = 419,604.78 × 169,040.84
  4. Step 4: Simplify right side
    279,874.76x = 70,930,344,479.22
  5. Step 5: Solve for x
    x = 70,930,344,479.22/279,874.76
  6. Step 6: Final answer
    x = 253,436.02

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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.