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Finding the Fourth Proportional to 266,446.67, 399,696.57 and 76,911.63

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Solution

The fourth proportional to 266,446.67, 399,696.57 and 76,911.63 is: 115,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,446.67 : 399,696.57 = 76,911.63 : x
  2. Step 2: Convert to fraction form
    266,446.67/399,696.57 = 76,911.63/x
  3. Step 3: Cross multiply
    266,446.67x = 399,696.57 × 76,911.63
  4. Step 4: Simplify right side
    266,446.67x = 30,741,314,704.11
  5. Step 5: Solve for x
    x = 30,741,314,704.11/266,446.67
  6. Step 6: Final answer
    x = 115,375.11

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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.