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Finding the Fourth Proportional to 394,233, 544,041.54 and 215,385

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Solution

The fourth proportional to 394,233, 544,041.54 and 215,385 is: 297,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,233 : 544,041.54 = 215,385 : x
  2. Step 2: Convert to fraction form
    394,233/544,041.54 = 215,385/x
  3. Step 3: Cross multiply
    394,233x = 544,041.54 × 215,385
  4. Step 4: Simplify right side
    394,233x = 117,178,387,092.90
  5. Step 5: Solve for x
    x = 117,178,387,092.90/394,233
  6. Step 6: Final answer
    x = 297,231.30

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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.