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Finding the Fourth Proportional to 356,279.82, 491,674.12 and 203,314.96

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Solution

The fourth proportional to 356,279.82, 491,674.12 and 203,314.96 is: 280,579.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,279.82 : 491,674.12 = 203,314.96 : x
  2. Step 2: Convert to fraction form
    356,279.82/491,674.12 = 203,314.96/x
  3. Step 3: Cross multiply
    356,279.82x = 491,674.12 × 203,314.96
  4. Step 4: Simplify right side
    356,279.82x = 99,964,704,147.14
  5. Step 5: Solve for x
    x = 99,964,704,147.14/356,279.82
  6. Step 6: Final answer
    x = 280,579.20

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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.