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Finding the Fourth Proportional to 281,662.56, 388,694.28 and 168,511.92

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Solution

The fourth proportional to 281,662.56, 388,694.28 and 168,511.92 is: 232,546.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,662.56 : 388,694.28 = 168,511.92 : x
  2. Step 2: Convert to fraction form
    281,662.56/388,694.28 = 168,511.92/x
  3. Step 3: Cross multiply
    281,662.56x = 388,694.28 × 168,511.92
  4. Step 4: Simplify right side
    281,662.56x = 65,499,619,415.82
  5. Step 5: Solve for x
    x = 65,499,619,415.82/281,662.56
  6. Step 6: Final answer
    x = 232,546.42

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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.