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Finding the Fourth Proportional to 223,328, 308,192.64 and 122,726

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Solution

The fourth proportional to 223,328, 308,192.64 and 122,726 is: 169,361.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,328 : 308,192.64 = 122,726 : x
  2. Step 2: Convert to fraction form
    223,328/308,192.64 = 122,726/x
  3. Step 3: Cross multiply
    223,328x = 308,192.64 × 122,726
  4. Step 4: Simplify right side
    223,328x = 37,823,249,936.64
  5. Step 5: Solve for x
    x = 37,823,249,936.64/223,328
  6. Step 6: Final answer
    x = 169,361.88

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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.