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Finding the Fourth Proportional to 622,021.65, 932,243.49 and 280,100.26

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Solution

The fourth proportional to 622,021.65, 932,243.49 and 280,100.26 is: 419,795.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,021.65 : 932,243.49 = 280,100.26 : x
  2. Step 2: Convert to fraction form
    622,021.65/932,243.49 = 280,100.26/x
  3. Step 3: Cross multiply
    622,021.65x = 932,243.49 × 280,100.26
  4. Step 4: Simplify right side
    622,021.65x = 261,121,646,759.37
  5. Step 5: Solve for x
    x = 261,121,646,759.37/622,021.65
  6. Step 6: Final answer
    x = 419,795.11

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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.