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Finding the Fourth Proportional to 223,640.24, 308,629.32 and 121,672.04

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Solution

The fourth proportional to 223,640.24, 308,629.32 and 121,672.04 is: 167,910.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,640.24 : 308,629.32 = 121,672.04 : x
  2. Step 2: Convert to fraction form
    223,640.24/308,629.32 = 121,672.04/x
  3. Step 3: Cross multiply
    223,640.24x = 308,629.32 × 121,672.04
  4. Step 4: Simplify right side
    223,640.24x = 37,551,558,968.21
  5. Step 5: Solve for x
    x = 37,551,558,968.21/223,640.24
  6. Step 6: Final answer
    x = 167,910.56

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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.