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Finding the Fourth Proportional to 263,540.72, 395,168.88 and 136,868.46

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Solution

The fourth proportional to 263,540.72, 395,168.88 and 136,868.46 is: 205,228.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,540.72 : 395,168.88 = 136,868.46 : x
  2. Step 2: Convert to fraction form
    263,540.72/395,168.88 = 136,868.46/x
  3. Step 3: Cross multiply
    263,540.72x = 395,168.88 × 136,868.46
  4. Step 4: Simplify right side
    263,540.72x = 54,086,156,045.52
  5. Step 5: Solve for x
    x = 54,086,156,045.52/263,540.72
  6. Step 6: Final answer
    x = 205,228.84

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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.