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Finding the Fourth Proportional to 404,643.48, 558,408.03 and 223,355.45

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Solution

The fourth proportional to 404,643.48, 558,408.03 and 223,355.45 is: 308,230.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,643.48 : 558,408.03 = 223,355.45 : x
  2. Step 2: Convert to fraction form
    404,643.48/558,408.03 = 223,355.45/x
  3. Step 3: Cross multiply
    404,643.48x = 558,408.03 × 223,355.45
  4. Step 4: Simplify right side
    404,643.48x = 124,723,478,220.28
  5. Step 5: Solve for x
    x = 124,723,478,220.28/404,643.48
  6. Step 6: Final answer
    x = 308,230.54

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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.