Home / 215,701.38-321,864.66-193,286.52

Finding the Fourth Proportional to 215,701.38, 321,864.66 and 193,286.52

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Solution

The fourth proportional to 215,701.38, 321,864.66 and 193,286.52 is: 288,417.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,701.38 : 321,864.66 = 193,286.52 : x
  2. Step 2: Convert to fraction form
    215,701.38/321,864.66 = 193,286.52/x
  3. Step 3: Cross multiply
    215,701.38x = 321,864.66 × 193,286.52
  4. Step 4: Simplify right side
    215,701.38x = 62,212,100,042.38
  5. Step 5: Solve for x
    x = 62,212,100,042.38/215,701.38
  6. Step 6: Final answer
    x = 288,417.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.