Home / 394,296.45-591,614.16-128,138.55

Finding the Fourth Proportional to 394,296.45, 591,614.16 and 128,138.55

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Solution

The fourth proportional to 394,296.45, 591,614.16 and 128,138.55 is: 192,262.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,296.45 : 591,614.16 = 128,138.55 : x
  2. Step 2: Convert to fraction form
    394,296.45/591,614.16 = 128,138.55/x
  3. Step 3: Cross multiply
    394,296.45x = 591,614.16 × 128,138.55
  4. Step 4: Simplify right side
    394,296.45x = 75,808,580,621.87
  5. Step 5: Solve for x
    x = 75,808,580,621.87/394,296.45
  6. Step 6: Final answer
    x = 192,262.90

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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.