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Finding the Fourth Proportional to 259,414.60, 389,092.70 and 69,888.96

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Solution

The fourth proportional to 259,414.60, 389,092.70 and 69,888.96 is: 104,825.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,414.60 : 389,092.70 = 69,888.96 : x
  2. Step 2: Convert to fraction form
    259,414.60/389,092.70 = 69,888.96/x
  3. Step 3: Cross multiply
    259,414.60x = 389,092.70 × 69,888.96
  4. Step 4: Simplify right side
    259,414.60x = 27,193,284,146.59
  5. Step 5: Solve for x
    x = 27,193,284,146.59/259,414.60
  6. Step 6: Final answer
    x = 104,825.57

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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.