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Finding the Fourth Proportional to 547,277.32, 755,257.78 and 305,550.60

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Solution

The fourth proportional to 547,277.32, 755,257.78 and 305,550.60 is: 421,668.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,277.32 : 755,257.78 = 305,550.60 : x
  2. Step 2: Convert to fraction form
    547,277.32/755,257.78 = 305,550.60/x
  3. Step 3: Cross multiply
    547,277.32x = 755,257.78 × 305,550.60
  4. Step 4: Simplify right side
    547,277.32x = 230,769,467,833.67
  5. Step 5: Solve for x
    x = 230,769,467,833.67/547,277.32
  6. Step 6: Final answer
    x = 421,668.25

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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.