Home / 215,932.58-321,682.72-206,217.21

Finding the Fourth Proportional to 215,932.58, 321,682.72 and 206,217.21

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Solution

The fourth proportional to 215,932.58, 321,682.72 and 206,217.21 is: 307,209.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,932.58 : 321,682.72 = 206,217.21 : x
  2. Step 2: Convert to fraction form
    215,932.58/321,682.72 = 206,217.21/x
  3. Step 3: Cross multiply
    215,932.58x = 321,682.72 × 206,217.21
  4. Step 4: Simplify right side
    215,932.58x = 66,336,513,023.61
  5. Step 5: Solve for x
    x = 66,336,513,023.61/215,932.58
  6. Step 6: Final answer
    x = 307,209.38

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1.5x scale

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.