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Finding the Fourth Proportional to 394,316.94, 591,524.55 and 154,399.86

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Solution

The fourth proportional to 394,316.94, 591,524.55 and 154,399.86 is: 231,619.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,316.94 : 591,524.55 = 154,399.86 : x
  2. Step 2: Convert to fraction form
    394,316.94/591,524.55 = 154,399.86/x
  3. Step 3: Cross multiply
    394,316.94x = 591,524.55 × 154,399.86
  4. Step 4: Simplify right side
    394,316.94x = 91,331,307,706.56
  5. Step 5: Solve for x
    x = 91,331,307,706.56/394,316.94
  6. Step 6: Final answer
    x = 231,619.03

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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.