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Finding the Fourth Proportional to 287,370.33, 396,570.81 and 166,581.57

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Solution

The fourth proportional to 287,370.33, 396,570.81 and 166,581.57 is: 229,882.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,370.33 : 396,570.81 = 166,581.57 : x
  2. Step 2: Convert to fraction form
    287,370.33/396,570.81 = 166,581.57/x
  3. Step 3: Cross multiply
    287,370.33x = 396,570.81 × 166,581.57
  4. Step 4: Simplify right side
    287,370.33x = 66,061,388,145.97
  5. Step 5: Solve for x
    x = 66,061,388,145.97/287,370.33
  6. Step 6: Final answer
    x = 229,882.42

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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.