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Finding the Fourth Proportional to 394,617.25, 591,922.16 and 170,136.28

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Solution

The fourth proportional to 394,617.25, 591,922.16 and 170,136.28 is: 255,202.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,617.25 : 591,922.16 = 170,136.28 : x
  2. Step 2: Convert to fraction form
    394,617.25/591,922.16 = 170,136.28/x
  3. Step 3: Cross multiply
    394,617.25x = 591,922.16 × 170,136.28
  4. Step 4: Simplify right side
    394,617.25x = 100,707,430,541.67
  5. Step 5: Solve for x
    x = 100,707,430,541.67/394,617.25
  6. Step 6: Final answer
    x = 255,202.81

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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.