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Finding the Fourth Proportional to 279,899.46, 419,914.80 and 92,910.96

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Solution

The fourth proportional to 279,899.46, 419,914.80 and 92,910.96 is: 139,388.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,899.46 : 419,914.80 = 92,910.96 : x
  2. Step 2: Convert to fraction form
    279,899.46/419,914.80 = 92,910.96/x
  3. Step 3: Cross multiply
    279,899.46x = 419,914.80 × 92,910.96
  4. Step 4: Simplify right side
    279,899.46x = 39,014,687,186.21
  5. Step 5: Solve for x
    x = 39,014,687,186.21/279,899.46
  6. Step 6: Final answer
    x = 139,388.22

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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.