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Finding the Fourth Proportional to 223,326, 308,189.88 and 122,724

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Solution

The fourth proportional to 223,326, 308,189.88 and 122,724 is: 169,359.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,326 : 308,189.88 = 122,724 : x
  2. Step 2: Convert to fraction form
    223,326/308,189.88 = 122,724/x
  3. Step 3: Cross multiply
    223,326x = 308,189.88 × 122,724
  4. Step 4: Simplify right side
    223,326x = 37,822,294,833.12
  5. Step 5: Solve for x
    x = 37,822,294,833.12/223,326
  6. Step 6: Final answer
    x = 169,359.12

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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.