Home / 259,414.45-389,239.89-133,143.36

Finding the Fourth Proportional to 259,414.45, 389,239.89 and 133,143.36

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Solution

The fourth proportional to 259,414.45, 389,239.89 and 133,143.36 is: 199,775.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,414.45 : 389,239.89 = 133,143.36 : x
  2. Step 2: Convert to fraction form
    259,414.45/389,239.89 = 133,143.36/x
  3. Step 3: Cross multiply
    259,414.45x = 389,239.89 × 133,143.36
  4. Step 4: Simplify right side
    259,414.45x = 51,824,704,841.69
  5. Step 5: Solve for x
    x = 51,824,704,841.69/259,414.45
  6. Step 6: Final answer
    x = 199,775.71

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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.