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Finding the Fourth Proportional to 235,508.62, 324,998.81 and 128,076.37

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Solution

The fourth proportional to 235,508.62, 324,998.81 and 128,076.37 is: 176,743.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,508.62 : 324,998.81 = 128,076.37 : x
  2. Step 2: Convert to fraction form
    235,508.62/324,998.81 = 128,076.37/x
  3. Step 3: Cross multiply
    235,508.62x = 324,998.81 × 128,076.37
  4. Step 4: Simplify right side
    235,508.62x = 41,624,667,839.12
  5. Step 5: Solve for x
    x = 41,624,667,839.12/235,508.62
  6. Step 6: Final answer
    x = 176,743.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.