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Finding the Fourth Proportional to 259,635.20, 389,625.60 and 119,321.60

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Solution

The fourth proportional to 259,635.20, 389,625.60 and 119,321.60 is: 179,061.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,635.20 : 389,625.60 = 119,321.60 : x
  2. Step 2: Convert to fraction form
    259,635.20/389,625.60 = 119,321.60/x
  3. Step 3: Cross multiply
    259,635.20x = 389,625.60 × 119,321.60
  4. Step 4: Simplify right side
    259,635.20x = 46,490,749,992.96
  5. Step 5: Solve for x
    x = 46,490,749,992.96/259,635.20
  6. Step 6: Final answer
    x = 179,061.81

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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.