Home / 215,750.12-323,671.92-82,630.40

Finding the Fourth Proportional to 215,750.12, 323,671.92 and 82,630.40

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Solution

The fourth proportional to 215,750.12, 323,671.92 and 82,630.40 is: 123,963.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,750.12 : 323,671.92 = 82,630.40 : x
  2. Step 2: Convert to fraction form
    215,750.12/323,671.92 = 82,630.40/x
  3. Step 3: Cross multiply
    215,750.12x = 323,671.92 × 82,630.40
  4. Step 4: Simplify right side
    215,750.12x = 26,745,138,290.14
  5. Step 5: Solve for x
    x = 26,745,138,290.14/215,750.12
  6. Step 6: Final answer
    x = 123,963.49

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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.