Home / 259,943.90-389,912.75-82,452.45

Finding the Fourth Proportional to 259,943.90, 389,912.75 and 82,452.45

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Solution

The fourth proportional to 259,943.90, 389,912.75 and 82,452.45 is: 123,677.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,943.90 : 389,912.75 = 82,452.45 : x
  2. Step 2: Convert to fraction form
    259,943.90/389,912.75 = 82,452.45/x
  3. Step 3: Cross multiply
    259,943.90x = 389,912.75 × 82,452.45
  4. Step 4: Simplify right side
    259,943.90x = 32,149,261,523.74
  5. Step 5: Solve for x
    x = 32,149,261,523.74/259,943.90
  6. Step 6: Final answer
    x = 123,677.69

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1.5x scale

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.