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Finding the Fourth Proportional to 279,940.20, 419,910.30 and 92,951.70

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Solution

The fourth proportional to 279,940.20, 419,910.30 and 92,951.70 is: 139,427.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,940.20 : 419,910.30 = 92,951.70 : x
  2. Step 2: Convert to fraction form
    279,940.20/419,910.30 = 92,951.70/x
  3. Step 3: Cross multiply
    279,940.20x = 419,910.30 × 92,951.70
  4. Step 4: Simplify right side
    279,940.20x = 39,031,376,232.51
  5. Step 5: Solve for x
    x = 39,031,376,232.51/279,940.20
  6. Step 6: Final answer
    x = 139,427.55

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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.