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Finding the Fourth Proportional to 203,650.38, 305,352.78 and 91,310.28

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Solution

The fourth proportional to 203,650.38, 305,352.78 and 91,310.28 is: 136,910.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,650.38 : 305,352.78 = 91,310.28 : x
  2. Step 2: Convert to fraction form
    203,650.38/305,352.78 = 91,310.28/x
  3. Step 3: Cross multiply
    203,650.38x = 305,352.78 × 91,310.28
  4. Step 4: Simplify right side
    203,650.38x = 27,881,847,840.58
  5. Step 5: Solve for x
    x = 27,881,847,840.58/203,650.38
  6. Step 6: Final answer
    x = 136,910.36

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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.