Home / 259,972.80-389,959.20-120,004.80

Finding the Fourth Proportional to 259,972.80, 389,959.20 and 120,004.80

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Solution

The fourth proportional to 259,972.80, 389,959.20 and 120,004.80 is: 180,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,972.80 : 389,959.20 = 120,004.80 : x
  2. Step 2: Convert to fraction form
    259,972.80/389,959.20 = 120,004.80/x
  3. Step 3: Cross multiply
    259,972.80x = 389,959.20 × 120,004.80
  4. Step 4: Simplify right side
    259,972.80x = 46,796,975,804.16
  5. Step 5: Solve for x
    x = 46,796,975,804.16/259,972.80
  6. Step 6: Final answer
    x = 180,007.20

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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.