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Finding the Fourth Proportional to 303,917.30, 419,405.49 and 169,781.30

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Solution

The fourth proportional to 303,917.30, 419,405.49 and 169,781.30 is: 234,297.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,917.30 : 419,405.49 = 169,781.30 : x
  2. Step 2: Convert to fraction form
    303,917.30/419,405.49 = 169,781.30/x
  3. Step 3: Cross multiply
    303,917.30x = 419,405.49 × 169,781.30
  4. Step 4: Simplify right side
    303,917.30x = 71,207,209,319.34
  5. Step 5: Solve for x
    x = 71,207,209,319.34/303,917.30
  6. Step 6: Final answer
    x = 234,297.98

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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.