Home / 215,438.81-322,991.69-108,767.85

Finding the Fourth Proportional to 215,438.81, 322,991.69 and 108,767.85

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Solution

The fourth proportional to 215,438.81, 322,991.69 and 108,767.85 is: 163,067.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,438.81 : 322,991.69 = 108,767.85 : x
  2. Step 2: Convert to fraction form
    215,438.81/322,991.69 = 108,767.85/x
  3. Step 3: Cross multiply
    215,438.81x = 322,991.69 × 108,767.85
  4. Step 4: Simplify right side
    215,438.81x = 35,131,111,145.33
  5. Step 5: Solve for x
    x = 35,131,111,145.33/215,438.81
  6. Step 6: Final answer
    x = 163,067.70

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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.