Home / 394,301.46-591,621.66-128,143.56

Finding the Fourth Proportional to 394,301.46, 591,621.66 and 128,143.56

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Solution

The fourth proportional to 394,301.46, 591,621.66 and 128,143.56 is: 192,270.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,301.46 : 591,621.66 = 128,143.56 : x
  2. Step 2: Convert to fraction form
    394,301.46/591,621.66 = 128,143.56/x
  3. Step 3: Cross multiply
    394,301.46x = 591,621.66 × 128,143.56
  4. Step 4: Simplify right side
    394,301.46x = 75,812,505,685.51
  5. Step 5: Solve for x
    x = 75,812,505,685.51/394,301.46
  6. Step 6: Final answer
    x = 192,270.42

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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.