Home / 394,297.70-591,616.04-128,139.80

Finding the Fourth Proportional to 394,297.70, 591,616.04 and 128,139.80

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Solution

The fourth proportional to 394,297.70, 591,616.04 and 128,139.80 is: 192,264.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,297.70 : 591,616.04 = 128,139.80 : x
  2. Step 2: Convert to fraction form
    394,297.70/591,616.04 = 128,139.80/x
  3. Step 3: Cross multiply
    394,297.70x = 591,616.04 × 128,139.80
  4. Step 4: Simplify right side
    394,297.70x = 75,809,557,443.61
  5. Step 5: Solve for x
    x = 75,809,557,443.61/394,297.70
  6. Step 6: Final answer
    x = 192,264.77

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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.