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Finding the Fourth Proportional to 394,445.80, 591,755.10 and 194,861.80

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Solution

The fourth proportional to 394,445.80, 591,755.10 and 194,861.80 is: 292,335.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,445.80 : 591,755.10 = 194,861.80 : x
  2. Step 2: Convert to fraction form
    394,445.80/591,755.10 = 194,861.80/x
  3. Step 3: Cross multiply
    394,445.80x = 591,755.10 × 194,861.80
  4. Step 4: Simplify right side
    394,445.80x = 115,310,463,945.18
  5. Step 5: Solve for x
    x = 115,310,463,945.18/394,445.80
  6. Step 6: Final answer
    x = 292,335.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.