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Finding the Fourth Proportional to 275,009.94, 379,536.94 and 154,149.30

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Solution

The fourth proportional to 275,009.94, 379,536.94 and 154,149.30 is: 212,739.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,009.94 : 379,536.94 = 154,149.30 : x
  2. Step 2: Convert to fraction form
    275,009.94/379,536.94 = 154,149.30/x
  3. Step 3: Cross multiply
    275,009.94x = 379,536.94 × 154,149.30
  4. Step 4: Simplify right side
    275,009.94x = 58,505,353,625.14
  5. Step 5: Solve for x
    x = 58,505,353,625.14/275,009.94
  6. Step 6: Final answer
    x = 212,739.05

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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.