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Finding the Fourth Proportional to 281,481.04, 388,447.14 and 154,162

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Solution

The fourth proportional to 281,481.04, 388,447.14 and 154,162 is: 212,745.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,481.04 : 388,447.14 = 154,162 : x
  2. Step 2: Convert to fraction form
    281,481.04/388,447.14 = 154,162/x
  3. Step 3: Cross multiply
    281,481.04x = 388,447.14 × 154,162
  4. Step 4: Simplify right side
    281,481.04x = 59,883,787,996.68
  5. Step 5: Solve for x
    x = 59,883,787,996.68/281,481.04
  6. Step 6: Final answer
    x = 212,745.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.