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Finding the Fourth Proportional to 275,300.82, 379,917.72 and 154,444.70

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Solution

The fourth proportional to 275,300.82, 379,917.72 and 154,444.70 is: 213,135.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,300.82 : 379,917.72 = 154,444.70 : x
  2. Step 2: Convert to fraction form
    275,300.82/379,917.72 = 154,444.70/x
  3. Step 3: Cross multiply
    275,300.82x = 379,917.72 × 154,444.70
  4. Step 4: Simplify right side
    275,300.82x = 58,676,278,290.08
  5. Step 5: Solve for x
    x = 58,676,278,290.08/275,300.82
  6. Step 6: Final answer
    x = 213,135.14

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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.