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Finding the Fourth Proportional to 275,159.87, 379,714.68 and 154,298.49

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Solution

The fourth proportional to 275,159.87, 379,714.68 and 154,298.49 is: 212,928.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,159.87 : 379,714.68 = 154,298.49 : x
  2. Step 2: Convert to fraction form
    275,159.87/379,714.68 = 154,298.49/x
  3. Step 3: Cross multiply
    275,159.87x = 379,714.68 × 154,298.49
  4. Step 4: Simplify right side
    275,159.87x = 58,589,401,754.83
  5. Step 5: Solve for x
    x = 58,589,401,754.83/275,159.87
  6. Step 6: Final answer
    x = 212,928.59

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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.