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Finding the Fourth Proportional to 276,767.80, 415,030.20 and 126,958.30

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Solution

The fourth proportional to 276,767.80, 415,030.20 and 126,958.30 is: 190,381.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,767.80 : 415,030.20 = 126,958.30 : x
  2. Step 2: Convert to fraction form
    276,767.80/415,030.20 = 126,958.30/x
  3. Step 3: Cross multiply
    276,767.80x = 415,030.20 × 126,958.30
  4. Step 4: Simplify right side
    276,767.80x = 52,691,528,640.66
  5. Step 5: Solve for x
    x = 52,691,528,640.66/276,767.80
  6. Step 6: Final answer
    x = 190,381.72

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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.