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Finding the Fourth Proportional to 331,640.36, 457,659.76 and 195,674.56

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Solution

The fourth proportional to 331,640.36, 457,659.76 and 195,674.56 is: 270,028.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,640.36 : 457,659.76 = 195,674.56 : x
  2. Step 2: Convert to fraction form
    331,640.36/457,659.76 = 195,674.56/x
  3. Step 3: Cross multiply
    331,640.36x = 457,659.76 × 195,674.56
  4. Step 4: Simplify right side
    331,640.36x = 89,552,372,167.71
  5. Step 5: Solve for x
    x = 89,552,372,167.71/331,640.36
  6. Step 6: Final answer
    x = 270,028.57

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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.