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Finding the Fourth Proportional to 223,361, 308,238.18 and 122,759

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Solution

The fourth proportional to 223,361, 308,238.18 and 122,759 is: 169,407.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,361 : 308,238.18 = 122,759 : x
  2. Step 2: Convert to fraction form
    223,361/308,238.18 = 122,759/x
  3. Step 3: Cross multiply
    223,361x = 308,238.18 × 122,759
  4. Step 4: Simplify right side
    223,361x = 37,839,010,738.62
  5. Step 5: Solve for x
    x = 37,839,010,738.62/223,361
  6. Step 6: Final answer
    x = 169,407.42

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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.