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Finding the Fourth Proportional to 276,528.92, 415,014.84 and 126,839.72

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Solution

The fourth proportional to 276,528.92, 415,014.84 and 126,839.72 is: 190,361.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,528.92 : 415,014.84 = 126,839.72 : x
  2. Step 2: Convert to fraction form
    276,528.92/415,014.84 = 126,839.72/x
  3. Step 3: Cross multiply
    276,528.92x = 415,014.84 × 126,839.72
  4. Step 4: Simplify right side
    276,528.92x = 52,640,366,101.44
  5. Step 5: Solve for x
    x = 52,640,366,101.44/276,528.92
  6. Step 6: Final answer
    x = 190,361.16

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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.