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Finding the Fourth Proportional to 275,220.60, 412,830.90 and 75,571.80

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Solution

The fourth proportional to 275,220.60, 412,830.90 and 75,571.80 is: 113,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,220.60 : 412,830.90 = 75,571.80 : x
  2. Step 2: Convert to fraction form
    275,220.60/412,830.90 = 75,571.80/x
  3. Step 3: Cross multiply
    275,220.60x = 412,830.90 × 75,571.80
  4. Step 4: Simplify right side
    275,220.60x = 31,198,374,208.62
  5. Step 5: Solve for x
    x = 31,198,374,208.62/275,220.60
  6. Step 6: Final answer
    x = 113,357.70

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1.5x scale

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.