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Finding the Fourth Proportional to 494,347.05, 682,172.69 and 279,474.30

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Solution

The fourth proportional to 494,347.05, 682,172.69 and 279,474.30 is: 385,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,347.05 : 682,172.69 = 279,474.30 : x
  2. Step 2: Convert to fraction form
    494,347.05/682,172.69 = 279,474.30/x
  3. Step 3: Cross multiply
    494,347.05x = 682,172.69 × 279,474.30
  4. Step 4: Simplify right side
    494,347.05x = 190,649,733,619.50
  5. Step 5: Solve for x
    x = 190,649,733,619.50/494,347.05
  6. Step 6: Final answer
    x = 385,659.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.