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Finding the Fourth Proportional to 281,847.64, 388,974.28 and 154,548.04

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Solution

The fourth proportional to 281,847.64, 388,974.28 and 154,548.04 is: 213,289.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,847.64 : 388,974.28 = 154,548.04 : x
  2. Step 2: Convert to fraction form
    281,847.64/388,974.28 = 154,548.04/x
  3. Step 3: Cross multiply
    281,847.64x = 388,974.28 × 154,548.04
  4. Step 4: Simplify right side
    281,847.64x = 60,115,212,584.41
  5. Step 5: Solve for x
    x = 60,115,212,584.41/281,847.64
  6. Step 6: Final answer
    x = 213,289.75

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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.