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Finding the Fourth Proportional to 394,664.40, 591,996.60 and 269,326.80

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Solution

The fourth proportional to 394,664.40, 591,996.60 and 269,326.80 is: 403,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,664.40 : 591,996.60 = 269,326.80 : x
  2. Step 2: Convert to fraction form
    394,664.40/591,996.60 = 269,326.80/x
  3. Step 3: Cross multiply
    394,664.40x = 591,996.60 × 269,326.80
  4. Step 4: Simplify right side
    394,664.40x = 159,440,549,888.88
  5. Step 5: Solve for x
    x = 159,440,549,888.88/394,664.40
  6. Step 6: Final answer
    x = 403,990.20

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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.