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Finding the Fourth Proportional to 275,066.78, 379,716.53 and 173,241.88

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Solution

The fourth proportional to 275,066.78, 379,716.53 and 173,241.88 is: 239,152.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,066.78 : 379,716.53 = 173,241.88 : x
  2. Step 2: Convert to fraction form
    275,066.78/379,716.53 = 173,241.88/x
  3. Step 3: Cross multiply
    275,066.78x = 379,716.53 × 173,241.88
  4. Step 4: Simplify right side
    275,066.78x = 65,782,803,708.78
  5. Step 5: Solve for x
    x = 65,782,803,708.78/275,066.78
  6. Step 6: Final answer
    x = 239,152.12

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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.