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Finding the Fourth Proportional to 276,763.80, 415,024.20 and 126,954.30

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Solution

The fourth proportional to 276,763.80, 415,024.20 and 126,954.30 is: 190,375.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,763.80 : 415,024.20 = 126,954.30 : x
  2. Step 2: Convert to fraction form
    276,763.80/415,024.20 = 126,954.30/x
  3. Step 3: Cross multiply
    276,763.80x = 415,024.20 × 126,954.30
  4. Step 4: Simplify right side
    276,763.80x = 52,689,106,794.06
  5. Step 5: Solve for x
    x = 52,689,106,794.06/276,763.80
  6. Step 6: Final answer
    x = 190,375.72

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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.