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Finding the Fourth Proportional to 275,114.98, 379,653.86 and 154,255.90

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Solution

The fourth proportional to 275,114.98, 379,653.86 and 154,255.90 is: 212,870.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,114.98 : 379,653.86 = 154,255.90 : x
  2. Step 2: Convert to fraction form
    275,114.98/379,653.86 = 154,255.90/x
  3. Step 3: Cross multiply
    275,114.98x = 379,653.86 × 154,255.90
  4. Step 4: Simplify right side
    275,114.98x = 58,563,846,876.66
  5. Step 5: Solve for x
    x = 58,563,846,876.66/275,114.98
  6. Step 6: Final answer
    x = 212,870.44

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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.