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Finding the Fourth Proportional to 250,021, 345,028.98 and 136,843.75

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Solution

The fourth proportional to 250,021, 345,028.98 and 136,843.75 is: 188,844.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,021 : 345,028.98 = 136,843.75 : x
  2. Step 2: Convert to fraction form
    250,021/345,028.98 = 136,843.75/x
  3. Step 3: Cross multiply
    250,021x = 345,028.98 × 136,843.75
  4. Step 4: Simplify right side
    250,021x = 47,215,059,481.88
  5. Step 5: Solve for x
    x = 47,215,059,481.88/250,021
  6. Step 6: Final answer
    x = 188,844.38

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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.