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Finding the Fourth Proportional to 858,049.12, 1,287,083.36 and 259,016

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Solution

The fourth proportional to 858,049.12, 1,287,083.36 and 259,016 is: 388,526.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,049.12 : 1,287,083.36 = 259,016 : x
  2. Step 2: Convert to fraction form
    858,049.12/1,287,083.36 = 259,016/x
  3. Step 3: Cross multiply
    858,049.12x = 1,287,083.36 × 259,016
  4. Step 4: Simplify right side
    858,049.12x = 333,375,183,573.76
  5. Step 5: Solve for x
    x = 333,375,183,573.76/858,049.12
  6. Step 6: Final answer
    x = 388,526.92

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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.