Home / 215,917.33-323,917.51-82,787.21

Finding the Fourth Proportional to 215,917.33, 323,917.51 and 82,787.21

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Solution

The fourth proportional to 215,917.33, 323,917.51 and 82,787.21 is: 124,196.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,917.33 : 323,917.51 = 82,787.21 : x
  2. Step 2: Convert to fraction form
    215,917.33/323,917.51 = 82,787.21/x
  3. Step 3: Cross multiply
    215,917.33x = 323,917.51 × 82,787.21
  4. Step 4: Simplify right side
    215,917.33x = 26,816,226,923.05
  5. Step 5: Solve for x
    x = 26,816,226,923.05/215,917.33
  6. Step 6: Final answer
    x = 124,196.73

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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.