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Finding the Fourth Proportional to 275,843.42, 380,664.24 and 154,984.64

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Solution

The fourth proportional to 275,843.42, 380,664.24 and 154,984.64 is: 213,878.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,843.42 : 380,664.24 = 154,984.64 : x
  2. Step 2: Convert to fraction form
    275,843.42/380,664.24 = 154,984.64/x
  3. Step 3: Cross multiply
    275,843.42x = 380,664.24 × 154,984.64
  4. Step 4: Simplify right side
    275,843.42x = 58,997,108,293.95
  5. Step 5: Solve for x
    x = 58,997,108,293.95/275,843.42
  6. Step 6: Final answer
    x = 213,878.98

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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.