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Finding the Fourth Proportional to 312,884.40, 431,777.87 and 176,945.04

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Solution

The fourth proportional to 312,884.40, 431,777.87 and 176,945.04 is: 244,182.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,884.40 : 431,777.87 = 176,945.04 : x
  2. Step 2: Convert to fraction form
    312,884.40/431,777.87 = 176,945.04/x
  3. Step 3: Cross multiply
    312,884.40x = 431,777.87 × 176,945.04
  4. Step 4: Simplify right side
    312,884.40x = 76,400,951,593.54
  5. Step 5: Solve for x
    x = 76,400,951,593.54/312,884.40
  6. Step 6: Final answer
    x = 244,182.68

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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.