Home / 394,299.46-591,618.66-128,141.56

Finding the Fourth Proportional to 394,299.46, 591,618.66 and 128,141.56

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Solution

The fourth proportional to 394,299.46, 591,618.66 and 128,141.56 is: 192,267.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,299.46 : 591,618.66 = 128,141.56 : x
  2. Step 2: Convert to fraction form
    394,299.46/591,618.66 = 128,141.56/x
  3. Step 3: Cross multiply
    394,299.46x = 591,618.66 × 128,141.56
  4. Step 4: Simplify right side
    394,299.46x = 75,810,938,017.51
  5. Step 5: Solve for x
    x = 75,810,938,017.51/394,299.46
  6. Step 6: Final answer
    x = 192,267.42

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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.