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Finding the Fourth Proportional to 223,356, 308,231.28 and 122,754

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Solution

The fourth proportional to 223,356, 308,231.28 and 122,754 is: 169,400.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,356 : 308,231.28 = 122,754 : x
  2. Step 2: Convert to fraction form
    223,356/308,231.28 = 122,754/x
  3. Step 3: Cross multiply
    223,356x = 308,231.28 × 122,754
  4. Step 4: Simplify right side
    223,356x = 37,836,622,545.12
  5. Step 5: Solve for x
    x = 37,836,622,545.12/223,356
  6. Step 6: Final answer
    x = 169,400.52

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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.