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Finding the Fourth Proportional to 287,808, 397,175.04 and 168,576

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Solution

The fourth proportional to 287,808, 397,175.04 and 168,576 is: 232,634.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,808 : 397,175.04 = 168,576 : x
  2. Step 2: Convert to fraction form
    287,808/397,175.04 = 168,576/x
  3. Step 3: Cross multiply
    287,808x = 397,175.04 × 168,576
  4. Step 4: Simplify right side
    287,808x = 66,954,179,543.04
  5. Step 5: Solve for x
    x = 66,954,179,543.04/287,808
  6. Step 6: Final answer
    x = 232,634.88

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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.