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Finding the Fourth Proportional to 279,519.66, 419,292.45 and 79,868.43

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Solution

The fourth proportional to 279,519.66, 419,292.45 and 79,868.43 is: 119,806.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,519.66 : 419,292.45 = 79,868.43 : x
  2. Step 2: Convert to fraction form
    279,519.66/419,292.45 = 79,868.43/x
  3. Step 3: Cross multiply
    279,519.66x = 419,292.45 × 79,868.43
  4. Step 4: Simplify right side
    279,519.66x = 33,488,229,692.35
  5. Step 5: Solve for x
    x = 33,488,229,692.35/279,519.66
  6. Step 6: Final answer
    x = 119,806.35

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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.