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Finding the Fourth Proportional to 203,991.75, 305,998.56 and 63,761.31

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Solution

The fourth proportional to 203,991.75, 305,998.56 and 63,761.31 is: 95,645.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,991.75 : 305,998.56 = 63,761.31 : x
  2. Step 2: Convert to fraction form
    203,991.75/305,998.56 = 63,761.31/x
  3. Step 3: Cross multiply
    203,991.75x = 305,998.56 × 63,761.31
  4. Step 4: Simplify right side
    203,991.75x = 19,510,869,043.71
  5. Step 5: Solve for x
    x = 19,510,869,043.71/203,991.75
  6. Step 6: Final answer
    x = 95,645.38

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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.