Home / 221,049.09-331,623.45-80,806.50

Finding the Fourth Proportional to 221,049.09, 331,623.45 and 80,806.50

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Solution

The fourth proportional to 221,049.09, 331,623.45 and 80,806.50 is: 121,227.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,049.09 : 331,623.45 = 80,806.50 : x
  2. Step 2: Convert to fraction form
    221,049.09/331,623.45 = 80,806.50/x
  3. Step 3: Cross multiply
    221,049.09x = 331,623.45 × 80,806.50
  4. Step 4: Simplify right side
    221,049.09x = 26,797,330,312.43
  5. Step 5: Solve for x
    x = 26,797,330,312.43/221,049.09
  6. Step 6: Final answer
    x = 121,227.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.