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Finding the Fourth Proportional to 192,679.31, 288,820.31 and 80,424.86

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Solution

The fourth proportional to 192,679.31, 288,820.31 and 80,424.86 is: 120,554.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,679.31 : 288,820.31 = 80,424.86 : x
  2. Step 2: Convert to fraction form
    192,679.31/288,820.31 = 80,424.86/x
  3. Step 3: Cross multiply
    192,679.31x = 288,820.31 × 80,424.86
  4. Step 4: Simplify right side
    192,679.31x = 23,228,331,150.68
  5. Step 5: Solve for x
    x = 23,228,331,150.68/192,679.31
  6. Step 6: Final answer
    x = 120,554.36

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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.