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Finding the Fourth Proportional to 274,577.58, 378,851.85 and 159,786.74

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Solution

The fourth proportional to 274,577.58, 378,851.85 and 159,786.74 is: 220,467.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,577.58 : 378,851.85 = 159,786.74 : x
  2. Step 2: Convert to fraction form
    274,577.58/378,851.85 = 159,786.74/x
  3. Step 3: Cross multiply
    274,577.58x = 378,851.85 × 159,786.74
  4. Step 4: Simplify right side
    274,577.58x = 60,535,503,001.60
  5. Step 5: Solve for x
    x = 60,535,503,001.60/274,577.58
  6. Step 6: Final answer
    x = 220,467.76

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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.