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Finding the Fourth Proportional to 217,540.80, 300,512.16 and 167,878.08

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Solution

The fourth proportional to 217,540.80, 300,512.16 and 167,878.08 is: 231,907.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,540.80 : 300,512.16 = 167,878.08 : x
  2. Step 2: Convert to fraction form
    217,540.80/300,512.16 = 167,878.08/x
  3. Step 3: Cross multiply
    217,540.80x = 300,512.16 × 167,878.08
  4. Step 4: Simplify right side
    217,540.80x = 50,449,404,437.45
  5. Step 5: Solve for x
    x = 50,449,404,437.45/217,540.80
  6. Step 6: Final answer
    x = 231,907.78

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1.5x scale

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.