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Finding the Fourth Proportional to 259,330.75, 388,996.12 and 69,791.54

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Solution

The fourth proportional to 259,330.75, 388,996.12 and 69,791.54 is: 104,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,330.75 : 388,996.12 = 69,791.54 : x
  2. Step 2: Convert to fraction form
    259,330.75/388,996.12 = 69,791.54/x
  3. Step 3: Cross multiply
    259,330.75x = 388,996.12 × 69,791.54
  4. Step 4: Simplify right side
    259,330.75x = 27,148,636,958.11
  5. Step 5: Solve for x
    x = 27,148,636,958.11/259,330.75
  6. Step 6: Final answer
    x = 104,687.30

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1.5x scale

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.