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Finding the Fourth Proportional to 225,976.68, 338,832.12 and 85,745.16

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Solution

The fourth proportional to 225,976.68, 338,832.12 and 85,745.16 is: 128,567.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,976.68 : 338,832.12 = 85,745.16 : x
  2. Step 2: Convert to fraction form
    225,976.68/338,832.12 = 85,745.16/x
  3. Step 3: Cross multiply
    225,976.68x = 338,832.12 × 85,745.16
  4. Step 4: Simplify right side
    225,976.68x = 29,053,214,342.54
  5. Step 5: Solve for x
    x = 29,053,214,342.54/225,976.68
  6. Step 6: Final answer
    x = 128,567.31

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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.