Home / 259,611.26-389,438.78-82,114.34

Finding the Fourth Proportional to 259,611.26, 389,438.78 and 82,114.34

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Solution

The fourth proportional to 259,611.26, 389,438.78 and 82,114.34 is: 123,178.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,611.26 : 389,438.78 = 82,114.34 : x
  2. Step 2: Convert to fraction form
    259,611.26/389,438.78 = 82,114.34/x
  3. Step 3: Cross multiply
    259,611.26x = 389,438.78 × 82,114.34
  4. Step 4: Simplify right side
    259,611.26x = 31,978,506,032.34
  5. Step 5: Solve for x
    x = 31,978,506,032.34/259,611.26
  6. Step 6: Final answer
    x = 123,178.43

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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.