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Finding the Fourth Proportional to 259,751.20, 389,511.60 and 119,552.80

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Solution

The fourth proportional to 259,751.20, 389,511.60 and 119,552.80 is: 179,276.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,751.20 : 389,511.60 = 119,552.80 : x
  2. Step 2: Convert to fraction form
    259,751.20/389,511.60 = 119,552.80/x
  3. Step 3: Cross multiply
    259,751.20x = 389,511.60 × 119,552.80
  4. Step 4: Simplify right side
    259,751.20x = 46,567,202,412.48
  5. Step 5: Solve for x
    x = 46,567,202,412.48/259,751.20
  6. Step 6: Final answer
    x = 179,276.18

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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.