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Finding the Fourth Proportional to 259,554.75, 389,329.65 and 82,061.73

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Solution

The fourth proportional to 259,554.75, 389,329.65 and 82,061.73 is: 123,091.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,554.75 : 389,329.65 = 82,061.73 : x
  2. Step 2: Convert to fraction form
    259,554.75/389,329.65 = 82,061.73/x
  3. Step 3: Cross multiply
    259,554.75x = 389,329.65 × 82,061.73
  4. Step 4: Simplify right side
    259,554.75x = 31,949,064,619.29
  5. Step 5: Solve for x
    x = 31,949,064,619.29/259,554.75
  6. Step 6: Final answer
    x = 123,091.81

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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.