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Finding the Fourth Proportional to 217,843.37, 300,625.05 and 122,350.08

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Solution

The fourth proportional to 217,843.37, 300,625.05 and 122,350.08 is: 168,843.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,843.37 : 300,625.05 = 122,350.08 : x
  2. Step 2: Convert to fraction form
    217,843.37/300,625.05 = 122,350.08/x
  3. Step 3: Cross multiply
    217,843.37x = 300,625.05 × 122,350.08
  4. Step 4: Simplify right side
    217,843.37x = 36,781,498,812.64
  5. Step 5: Solve for x
    x = 36,781,498,812.64/217,843.37
  6. Step 6: Final answer
    x = 168,843.78

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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.