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Finding the Fourth Proportional to 419,959.67, 629,939.97 and 104,416.61

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Solution

The fourth proportional to 419,959.67, 629,939.97 and 104,416.61 is: 156,625.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,959.67 : 629,939.97 = 104,416.61 : x
  2. Step 2: Convert to fraction form
    419,959.67/629,939.97 = 104,416.61/x
  3. Step 3: Cross multiply
    419,959.67x = 629,939.97 × 104,416.61
  4. Step 4: Simplify right side
    419,959.67x = 65,776,196,170.90
  5. Step 5: Solve for x
    x = 65,776,196,170.90/419,959.67
  6. Step 6: Final answer
    x = 156,625.03

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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.