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Finding the Fourth Proportional to 404,643.73, 558,408.38 and 223,355.70

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Solution

The fourth proportional to 404,643.73, 558,408.38 and 223,355.70 is: 308,230.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,643.73 : 558,408.38 = 223,355.70 : x
  2. Step 2: Convert to fraction form
    404,643.73/558,408.38 = 223,355.70/x
  3. Step 3: Cross multiply
    404,643.73x = 558,408.38 × 223,355.70
  4. Step 4: Simplify right side
    404,643.73x = 124,723,694,600.77
  5. Step 5: Solve for x
    x = 124,723,694,600.77/404,643.73
  6. Step 6: Final answer
    x = 308,230.88

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1.5x scale

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.