Home / 215,917.84-323,918.27-82,787.71

Finding the Fourth Proportional to 215,917.84, 323,918.27 and 82,787.71

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Solution

The fourth proportional to 215,917.84, 323,918.27 and 82,787.71 is: 124,197.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,917.84 : 323,918.27 = 82,787.71 : x
  2. Step 2: Convert to fraction form
    215,917.84/323,918.27 = 82,787.71/x
  3. Step 3: Cross multiply
    215,917.84x = 323,918.27 × 82,787.71
  4. Step 4: Simplify right side
    215,917.84x = 26,816,451,800.46
  5. Step 5: Solve for x
    x = 26,816,451,800.46/215,917.84
  6. Step 6: Final answer
    x = 124,197.48

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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.