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Finding the Fourth Proportional to 404,401.92, 558,076.56 and 223,116

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Solution

The fourth proportional to 404,401.92, 558,076.56 and 223,116 is: 307,901.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,401.92 : 558,076.56 = 223,116 : x
  2. Step 2: Convert to fraction form
    404,401.92/558,076.56 = 223,116/x
  3. Step 3: Cross multiply
    404,401.92x = 558,076.56 × 223,116
  4. Step 4: Simplify right side
    404,401.92x = 124,515,809,760.96
  5. Step 5: Solve for x
    x = 124,515,809,760.96/404,401.92
  6. Step 6: Final answer
    x = 307,901.13

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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.