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Finding the Fourth Proportional to 399,589.84, 551,459.44 and 227,522.85

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Solution

The fourth proportional to 399,589.84, 551,459.44 and 227,522.85 is: 313,996.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,589.84 : 551,459.44 = 227,522.85 : x
  2. Step 2: Convert to fraction form
    399,589.84/551,459.44 = 227,522.85/x
  3. Step 3: Cross multiply
    399,589.84x = 551,459.44 × 227,522.85
  4. Step 4: Simplify right side
    399,589.84x = 125,469,623,448.20
  5. Step 5: Solve for x
    x = 125,469,623,448.20/399,589.84
  6. Step 6: Final answer
    x = 313,996.03

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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.