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Finding the Fourth Proportional to 300,112.96, 449,669.61 and 211,179.61

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Solution

The fourth proportional to 300,112.96, 449,669.61 and 211,179.61 is: 316,417.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,112.96 : 449,669.61 = 211,179.61 : x
  2. Step 2: Convert to fraction form
    300,112.96/449,669.61 = 211,179.61/x
  3. Step 3: Cross multiply
    300,112.96x = 449,669.61 × 211,179.61
  4. Step 4: Simplify right side
    300,112.96x = 94,961,052,868.65
  5. Step 5: Solve for x
    x = 94,961,052,868.65/300,112.96
  6. Step 6: Final answer
    x = 316,417.70

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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.