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Finding the Fourth Proportional to 394,366.91, 591,313.34 and 154,194.62

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Solution

The fourth proportional to 394,366.91, 591,313.34 and 154,194.62 is: 231,199.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,366.91 : 591,313.34 = 154,194.62 : x
  2. Step 2: Convert to fraction form
    394,366.91/591,313.34 = 154,194.62/x
  3. Step 3: Cross multiply
    394,366.91x = 591,313.34 × 154,194.62
  4. Step 4: Simplify right side
    394,366.91x = 91,177,333,191.15
  5. Step 5: Solve for x
    x = 91,177,333,191.15/394,366.91
  6. Step 6: Final answer
    x = 231,199.25

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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.