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Finding the Fourth Proportional to 404,388.92, 558,058.54 and 223,100.78

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Solution

The fourth proportional to 404,388.92, 558,058.54 and 223,100.78 is: 307,880.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,388.92 : 558,058.54 = 223,100.78 : x
  2. Step 2: Convert to fraction form
    404,388.92/558,058.54 = 223,100.78/x
  3. Step 3: Cross multiply
    404,388.92x = 558,058.54 × 223,100.78
  4. Step 4: Simplify right side
    404,388.92x = 124,503,295,559.66
  5. Step 5: Solve for x
    x = 124,503,295,559.66/404,388.92
  6. Step 6: Final answer
    x = 307,880.09

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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.