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Finding the Fourth Proportional to 404,690.54, 558,481.11 and 223,401.74

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Solution

The fourth proportional to 404,690.54, 558,481.11 and 223,401.74 is: 308,298.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,690.54 : 558,481.11 = 223,401.74 : x
  2. Step 2: Convert to fraction form
    404,690.54/558,481.11 = 223,401.74/x
  3. Step 3: Cross multiply
    404,690.54x = 558,481.11 × 223,401.74
  4. Step 4: Simplify right side
    404,690.54x = 124,765,651,731.13
  5. Step 5: Solve for x
    x = 124,765,651,731.13/404,690.54
  6. Step 6: Final answer
    x = 308,298.91

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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.