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Finding the Fourth Proportional to 547,273.57, 755,205.78 and 305,571.44

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Solution

The fourth proportional to 547,273.57, 755,205.78 and 305,571.44 is: 421,670.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,273.57 : 755,205.78 = 305,571.44 : x
  2. Step 2: Convert to fraction form
    547,273.57/755,205.78 = 305,571.44/x
  3. Step 3: Cross multiply
    547,273.57x = 755,205.78 × 305,571.44
  4. Step 4: Simplify right side
    547,273.57x = 230,769,317,690.92
  5. Step 5: Solve for x
    x = 230,769,317,690.92/547,273.57
  6. Step 6: Final answer
    x = 421,670.86

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1.5x scale

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.