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Finding the Fourth Proportional to 300,940.65, 451,369.67 and 210,709.89

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Solution

The fourth proportional to 300,940.65, 451,369.67 and 210,709.89 is: 316,035.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,940.65 : 451,369.67 = 210,709.89 : x
  2. Step 2: Convert to fraction form
    300,940.65/451,369.67 = 210,709.89/x
  3. Step 3: Cross multiply
    300,940.65x = 451,369.67 × 210,709.89
  4. Step 4: Simplify right side
    300,940.65x = 95,108,052,461.49
  5. Step 5: Solve for x
    x = 95,108,052,461.49/300,940.65
  6. Step 6: Final answer
    x = 316,035.91

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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.