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Finding the Fourth Proportional to 276,917.04, 415,404.72 and 136,540.80

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Solution

The fourth proportional to 276,917.04, 415,404.72 and 136,540.80 is: 204,825.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,917.04 : 415,404.72 = 136,540.80 : x
  2. Step 2: Convert to fraction form
    276,917.04/415,404.72 = 136,540.80/x
  3. Step 3: Cross multiply
    276,917.04x = 415,404.72 × 136,540.80
  4. Step 4: Simplify right side
    276,917.04x = 56,719,692,792.58
  5. Step 5: Solve for x
    x = 56,719,692,792.58/276,917.04
  6. Step 6: Final answer
    x = 204,825.58

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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.