Home / 215,932.08-321,681.98-206,216.71

Finding the Fourth Proportional to 215,932.08, 321,681.98 and 206,216.71

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Solution

The fourth proportional to 215,932.08, 321,681.98 and 206,216.71 is: 307,208.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,932.08 : 321,681.98 = 206,216.71 : x
  2. Step 2: Convert to fraction form
    215,932.08/321,681.98 = 206,216.71/x
  3. Step 3: Cross multiply
    215,932.08x = 321,681.98 × 206,216.71
  4. Step 4: Simplify right side
    215,932.08x = 66,336,198,550.80
  5. Step 5: Solve for x
    x = 66,336,198,550.80/215,932.08
  6. Step 6: Final answer
    x = 307,208.63

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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.