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Finding the Fourth Proportional to 547,628.87, 755,673.62 and 305,906.24

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Solution

The fourth proportional to 547,628.87, 755,673.62 and 305,906.24 is: 422,120.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,628.87 : 755,673.62 = 305,906.24 : x
  2. Step 2: Convert to fraction form
    547,628.87/755,673.62 = 305,906.24/x
  3. Step 3: Cross multiply
    547,628.87x = 755,673.62 × 305,906.24
  4. Step 4: Simplify right side
    547,628.87x = 231,165,270,453.49
  5. Step 5: Solve for x
    x = 231,165,270,453.49/547,628.87
  6. Step 6: Final answer
    x = 422,120.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.