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Finding the Fourth Proportional to 307,940.80, 461,937.39 and 108,243.94

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Solution

The fourth proportional to 307,940.80, 461,937.39 and 108,243.94 is: 162,375.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,940.80 : 461,937.39 = 108,243.94 : x
  2. Step 2: Convert to fraction form
    307,940.80/461,937.39 = 108,243.94/x
  3. Step 3: Cross multiply
    307,940.80x = 461,937.39 × 108,243.94
  4. Step 4: Simplify right side
    307,940.80x = 50,001,923,126.92
  5. Step 5: Solve for x
    x = 50,001,923,126.92/307,940.80
  6. Step 6: Final answer
    x = 162,375.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.