Home / 259,621.20-389,431.80-159,456.60

Finding the Fourth Proportional to 259,621.20, 389,431.80 and 159,456.60

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Solution

The fourth proportional to 259,621.20, 389,431.80 and 159,456.60 is: 239,184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,621.20 : 389,431.80 = 159,456.60 : x
  2. Step 2: Convert to fraction form
    259,621.20/389,431.80 = 159,456.60/x
  3. Step 3: Cross multiply
    259,621.20x = 389,431.80 × 159,456.60
  4. Step 4: Simplify right side
    259,621.20x = 62,097,470,759.88
  5. Step 5: Solve for x
    x = 62,097,470,759.88/259,621.20
  6. Step 6: Final answer
    x = 239,184.90

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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.