Home / 259,415.45-389,241.39-133,144.36

Finding the Fourth Proportional to 259,415.45, 389,241.39 and 133,144.36

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Solution

The fourth proportional to 259,415.45, 389,241.39 and 133,144.36 is: 199,777.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,415.45 : 389,241.39 = 133,144.36 : x
  2. Step 2: Convert to fraction form
    259,415.45/389,241.39 = 133,144.36/x
  3. Step 3: Cross multiply
    259,415.45x = 389,241.39 × 133,144.36
  4. Step 4: Simplify right side
    259,415.45x = 51,825,295,757.06
  5. Step 5: Solve for x
    x = 51,825,295,757.06/259,415.45
  6. Step 6: Final answer
    x = 199,777.21

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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.