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Finding the Fourth Proportional to 222,991.35, 307,728.26 and 121,016.82

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Solution

The fourth proportional to 222,991.35, 307,728.26 and 121,016.82 is: 167,003.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,991.35 : 307,728.26 = 121,016.82 : x
  2. Step 2: Convert to fraction form
    222,991.35/307,728.26 = 121,016.82/x
  3. Step 3: Cross multiply
    222,991.35x = 307,728.26 × 121,016.82
  4. Step 4: Simplify right side
    222,991.35x = 37,240,295,449.33
  5. Step 5: Solve for x
    x = 37,240,295,449.33/222,991.35
  6. Step 6: Final answer
    x = 167,003.32

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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.