Home / 215,931.08-321,680.48-206,215.71

Finding the Fourth Proportional to 215,931.08, 321,680.48 and 206,215.71

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Solution

The fourth proportional to 215,931.08, 321,680.48 and 206,215.71 is: 307,207.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,931.08 : 321,680.48 = 206,215.71 : x
  2. Step 2: Convert to fraction form
    215,931.08/321,680.48 = 206,215.71/x
  3. Step 3: Cross multiply
    215,931.08x = 321,680.48 × 206,215.71
  4. Step 4: Simplify right side
    215,931.08x = 66,335,567,545.26
  5. Step 5: Solve for x
    x = 66,335,567,545.26/215,931.08
  6. Step 6: Final answer
    x = 307,207.14

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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.