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Finding the Fourth Proportional to 494,008.82, 681,723.27 and 279,144.26

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Solution

The fourth proportional to 494,008.82, 681,723.27 and 279,144.26 is: 385,214.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,008.82 : 681,723.27 = 279,144.26 : x
  2. Step 2: Convert to fraction form
    494,008.82/681,723.27 = 279,144.26/x
  3. Step 3: Cross multiply
    494,008.82x = 681,723.27 × 279,144.26
  4. Step 4: Simplify right side
    494,008.82x = 190,299,137,728.93
  5. Step 5: Solve for x
    x = 190,299,137,728.93/494,008.82
  6. Step 6: Final answer
    x = 385,214.05

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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.