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Finding the Fourth Proportional to 281,843.64, 388,968.75 and 154,544.04

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Solution

The fourth proportional to 281,843.64, 388,968.75 and 154,544.04 is: 213,284.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,843.64 : 388,968.75 = 154,544.04 : x
  2. Step 2: Convert to fraction form
    281,843.64/388,968.75 = 154,544.04/x
  3. Step 3: Cross multiply
    281,843.64x = 388,968.75 × 154,544.04
  4. Step 4: Simplify right side
    281,843.64x = 60,112,802,058.75
  5. Step 5: Solve for x
    x = 60,112,802,058.75/281,843.64
  6. Step 6: Final answer
    x = 213,284.22

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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.