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Finding the Fourth Proportional to 252,354.44, 378,569.58 and 81,519.12

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Solution

The fourth proportional to 252,354.44, 378,569.58 and 81,519.12 is: 122,290.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,354.44 : 378,569.58 = 81,519.12 : x
  2. Step 2: Convert to fraction form
    252,354.44/378,569.58 = 81,519.12/x
  3. Step 3: Cross multiply
    252,354.44x = 378,569.58 × 81,519.12
  4. Step 4: Simplify right side
    252,354.44x = 30,860,659,020.37
  5. Step 5: Solve for x
    x = 30,860,659,020.37/252,354.44
  6. Step 6: Final answer
    x = 122,290.93

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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.