Home / 213,432.44-320,313.89-80,433.68

Finding the Fourth Proportional to 213,432.44, 320,313.89 and 80,433.68

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Solution

The fourth proportional to 213,432.44, 320,313.89 and 80,433.68 is: 120,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,432.44 : 320,313.89 = 80,433.68 : x
  2. Step 2: Convert to fraction form
    213,432.44/320,313.89 = 80,433.68/x
  3. Step 3: Cross multiply
    213,432.44x = 320,313.89 × 80,433.68
  4. Step 4: Simplify right side
    213,432.44x = 25,764,023,527.33
  5. Step 5: Solve for x
    x = 25,764,023,527.33/213,432.44
  6. Step 6: Final answer
    x = 120,712.78

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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.