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Finding the Fourth Proportional to 253,760.92, 380,619.78 and 103,958.44

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Solution

The fourth proportional to 253,760.92, 380,619.78 and 103,958.44 is: 155,928.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,760.92 : 380,619.78 = 103,958.44 : x
  2. Step 2: Convert to fraction form
    253,760.92/380,619.78 = 103,958.44/x
  3. Step 3: Cross multiply
    253,760.92x = 380,619.78 × 103,958.44
  4. Step 4: Simplify right side
    253,760.92x = 39,568,638,561.94
  5. Step 5: Solve for x
    x = 39,568,638,561.94/253,760.92
  6. Step 6: Final answer
    x = 155,928.81

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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.