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Finding the Fourth Proportional to 192,618.03, 288,980.21 and 80,351.02

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Solution

The fourth proportional to 192,618.03, 288,980.21 and 80,351.02 is: 120,548.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,618.03 : 288,980.21 = 80,351.02 : x
  2. Step 2: Convert to fraction form
    192,618.03/288,980.21 = 80,351.02/x
  3. Step 3: Cross multiply
    192,618.03x = 288,980.21 × 80,351.02
  4. Step 4: Simplify right side
    192,618.03x = 23,219,854,231.56
  5. Step 5: Solve for x
    x = 23,219,854,231.56/192,618.03
  6. Step 6: Final answer
    x = 120,548.71

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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.