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Finding the Fourth Proportional to 275,189.48, 412,784.67 and 75,512.60

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Solution

The fourth proportional to 275,189.48, 412,784.67 and 75,512.60 is: 113,269.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,189.48 : 412,784.67 = 75,512.60 : x
  2. Step 2: Convert to fraction form
    275,189.48/412,784.67 = 75,512.60/x
  3. Step 3: Cross multiply
    275,189.48x = 412,784.67 × 75,512.60
  4. Step 4: Simplify right side
    275,189.48x = 31,170,443,671.84
  5. Step 5: Solve for x
    x = 31,170,443,671.84/275,189.48
  6. Step 6: Final answer
    x = 113,269.02

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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.