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Finding the Fourth Proportional to 394,464, 544,360.32 and 215,616

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Solution

The fourth proportional to 394,464, 544,360.32 and 215,616 is: 297,550.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,464 : 544,360.32 = 215,616 : x
  2. Step 2: Convert to fraction form
    394,464/544,360.32 = 215,616/x
  3. Step 3: Cross multiply
    394,464x = 544,360.32 × 215,616
  4. Step 4: Simplify right side
    394,464x = 117,372,794,757.12
  5. Step 5: Solve for x
    x = 117,372,794,757.12/394,464
  6. Step 6: Final answer
    x = 297,550.08

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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.