Home / 220,769.09-331,203-80,527.72

Finding the Fourth Proportional to 220,769.09, 331,203 and 80,527.72

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Solution

The fourth proportional to 220,769.09, 331,203 and 80,527.72 is: 120,809.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,769.09 : 331,203 = 80,527.72 : x
  2. Step 2: Convert to fraction form
    220,769.09/331,203 = 80,527.72/x
  3. Step 3: Cross multiply
    220,769.09x = 331,203 × 80,527.72
  4. Step 4: Simplify right side
    220,769.09x = 26,671,020,791.15
  5. Step 5: Solve for x
    x = 26,671,020,791.15/220,769.09
  6. Step 6: Final answer
    x = 120,809.58

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1.5x scale

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.