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Finding the Fourth Proportional to 222,995.52, 307,736.07 and 121,021.89

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Solution

The fourth proportional to 222,995.52, 307,736.07 and 121,021.89 is: 167,011.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,995.52 : 307,736.07 = 121,021.89 : x
  2. Step 2: Convert to fraction form
    222,995.52/307,736.07 = 121,021.89/x
  3. Step 3: Cross multiply
    222,995.52x = 307,736.07 × 121,021.89
  4. Step 4: Simplify right side
    222,995.52x = 37,242,800,812.57
  5. Step 5: Solve for x
    x = 37,242,800,812.57/222,995.52
  6. Step 6: Final answer
    x = 167,011.43

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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.