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Finding the Fourth Proportional to 404,301.09, 557,939.40 and 223,020.66

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Solution

The fourth proportional to 404,301.09, 557,939.40 and 223,020.66 is: 307,770.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,301.09 : 557,939.40 = 223,020.66 : x
  2. Step 2: Convert to fraction form
    404,301.09/557,939.40 = 223,020.66/x
  3. Step 3: Cross multiply
    404,301.09x = 557,939.40 × 223,020.66
  4. Step 4: Simplify right side
    404,301.09x = 124,432,012,112.90
  5. Step 5: Solve for x
    x = 124,432,012,112.90/404,301.09
  6. Step 6: Final answer
    x = 307,770.66

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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.