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Finding the Fourth Proportional to 300,115.29, 449,673.17 and 211,181.96

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Solution

The fourth proportional to 300,115.29, 449,673.17 and 211,181.96 is: 316,421.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,115.29 : 449,673.17 = 211,181.96 : x
  2. Step 2: Convert to fraction form
    300,115.29/449,673.17 = 211,181.96/x
  3. Step 3: Cross multiply
    300,115.29x = 449,673.17 × 211,181.96
  4. Step 4: Simplify right side
    300,115.29x = 94,962,858,095.74
  5. Step 5: Solve for x
    x = 94,962,858,095.74/300,115.29
  6. Step 6: Final answer
    x = 316,421.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.