Home / 394,304.48-591,626.16-128,146.56

Finding the Fourth Proportional to 394,304.48, 591,626.16 and 128,146.56

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Solution

The fourth proportional to 394,304.48, 591,626.16 and 128,146.56 is: 192,274.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,304.48 : 591,626.16 = 128,146.56 : x
  2. Step 2: Convert to fraction form
    394,304.48/591,626.16 = 128,146.56/x
  3. Step 3: Cross multiply
    394,304.48x = 591,626.16 × 128,146.56
  4. Step 4: Simplify right side
    394,304.48x = 75,814,857,210.01
  5. Step 5: Solve for x
    x = 75,814,857,210.01/394,304.48
  6. Step 6: Final answer
    x = 192,274.91

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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.