Home / 279,383.46-419,140.25-79,706.58

Finding the Fourth Proportional to 279,383.46, 419,140.25 and 79,706.58

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Solution

The fourth proportional to 279,383.46, 419,140.25 and 79,706.58 is: 119,578.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,383.46 : 419,140.25 = 79,706.58 : x
  2. Step 2: Convert to fraction form
    279,383.46/419,140.25 = 79,706.58/x
  3. Step 3: Cross multiply
    279,383.46x = 419,140.25 × 79,706.58
  4. Step 4: Simplify right side
    279,383.46x = 33,408,235,867.85
  5. Step 5: Solve for x
    x = 33,408,235,867.85/279,383.46
  6. Step 6: Final answer
    x = 119,578.43

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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.