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Finding the Fourth Proportional to 419,662.92, 629,680.29 and 219,935.82

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Solution

The fourth proportional to 419,662.92, 629,680.29 and 219,935.82 is: 330,001.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,662.92 : 629,680.29 = 219,935.82 : x
  2. Step 2: Convert to fraction form
    419,662.92/629,680.29 = 219,935.82/x
  3. Step 3: Cross multiply
    419,662.92x = 629,680.29 × 219,935.82
  4. Step 4: Simplify right side
    419,662.92x = 138,489,250,918.99
  5. Step 5: Solve for x
    x = 138,489,250,918.99/419,662.92
  6. Step 6: Final answer
    x = 330,001.16

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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.