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Finding the Fourth Proportional to 266,093.35, 399,256.94 and 139,704.22

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Solution

The fourth proportional to 266,093.35, 399,256.94 and 139,704.22 is: 209,617.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,093.35 : 399,256.94 = 139,704.22 : x
  2. Step 2: Convert to fraction form
    266,093.35/399,256.94 = 139,704.22/x
  3. Step 3: Cross multiply
    266,093.35x = 399,256.94 × 139,704.22
  4. Step 4: Simplify right side
    266,093.35x = 55,777,879,382.29
  5. Step 5: Solve for x
    x = 55,777,879,382.29/266,093.35
  6. Step 6: Final answer
    x = 209,617.71

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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.