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Finding the Fourth Proportional to 223,868.26, 308,930.52 and 121,892.08

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Solution

The fourth proportional to 223,868.26, 308,930.52 and 121,892.08 is: 168,206.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,868.26 : 308,930.52 = 121,892.08 : x
  2. Step 2: Convert to fraction form
    223,868.26/308,930.52 = 121,892.08/x
  3. Step 3: Cross multiply
    223,868.26x = 308,930.52 × 121,892.08
  4. Step 4: Simplify right side
    223,868.26x = 37,656,183,658.28
  5. Step 5: Solve for x
    x = 37,656,183,658.28/223,868.26
  6. Step 6: Final answer
    x = 168,206.89

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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.