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Finding the Fourth Proportional to 276,992.64, 415,080.24 and 126,862.56

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Solution

The fourth proportional to 276,992.64, 415,080.24 and 126,862.56 is: 190,106.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,992.64 : 415,080.24 = 126,862.56 : x
  2. Step 2: Convert to fraction form
    276,992.64/415,080.24 = 126,862.56/x
  3. Step 3: Cross multiply
    276,992.64x = 415,080.24 × 126,862.56
  4. Step 4: Simplify right side
    276,992.64x = 52,658,141,851.81
  5. Step 5: Solve for x
    x = 52,658,141,851.81/276,992.64
  6. Step 6: Final answer
    x = 190,106.65

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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.