Home / 259,945.65-389,915.37-82,454.21

Finding the Fourth Proportional to 259,945.65, 389,915.37 and 82,454.21

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Solution

The fourth proportional to 259,945.65, 389,915.37 and 82,454.21 is: 123,680.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,945.65 : 389,915.37 = 82,454.21 : x
  2. Step 2: Convert to fraction form
    259,945.65/389,915.37 = 82,454.21/x
  3. Step 3: Cross multiply
    259,945.65x = 389,915.37 × 82,454.21
  4. Step 4: Simplify right side
    259,945.65x = 32,150,161,850.63
  5. Step 5: Solve for x
    x = 32,150,161,850.63/259,945.65
  6. Step 6: Final answer
    x = 123,680.32

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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.