Home / 215,750.78-323,628.92-82,639.02

Finding the Fourth Proportional to 215,750.78, 323,628.92 and 82,639.02

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Solution

The fourth proportional to 215,750.78, 323,628.92 and 82,639.02 is: 123,959.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,750.78 : 323,628.92 = 82,639.02 : x
  2. Step 2: Convert to fraction form
    215,750.78/323,628.92 = 82,639.02/x
  3. Step 3: Cross multiply
    215,750.78x = 323,628.92 × 82,639.02
  4. Step 4: Simplify right side
    215,750.78x = 26,744,376,379.26
  5. Step 5: Solve for x
    x = 26,744,376,379.26/215,750.78
  6. Step 6: Final answer
    x = 123,959.58

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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.