Home / 215,933.51-321,684.11-206,218.15

Finding the Fourth Proportional to 215,933.51, 321,684.11 and 206,218.15

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Solution

The fourth proportional to 215,933.51, 321,684.11 and 206,218.15 is: 307,210.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,933.51 : 321,684.11 = 206,218.15 : x
  2. Step 2: Convert to fraction form
    215,933.51/321,684.11 = 206,218.15/x
  3. Step 3: Cross multiply
    215,933.51x = 321,684.11 × 206,218.15
  4. Step 4: Simplify right side
    215,933.51x = 66,337,102,048.60
  5. Step 5: Solve for x
    x = 66,337,102,048.60/215,933.51
  6. Step 6: Final answer
    x = 307,210.78

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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.