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Finding the Fourth Proportional to 394,980.86, 545,073.30 and 222,935.03

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Solution

The fourth proportional to 394,980.86, 545,073.30 and 222,935.03 is: 307,650.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,980.86 : 545,073.30 = 222,935.03 : x
  2. Step 2: Convert to fraction form
    394,980.86/545,073.30 = 222,935.03/x
  3. Step 3: Cross multiply
    394,980.86x = 545,073.30 × 222,935.03
  4. Step 4: Simplify right side
    394,980.86x = 121,515,934,872.40
  5. Step 5: Solve for x
    x = 121,515,934,872.40/394,980.86
  6. Step 6: Final answer
    x = 307,650.19

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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.