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Finding the Fourth Proportional to 481,000.25, 664,172.73 and 309,003.64

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Solution

The fourth proportional to 481,000.25, 664,172.73 and 309,003.64 is: 426,677.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,000.25 : 664,172.73 = 309,003.64 : x
  2. Step 2: Convert to fraction form
    481,000.25/664,172.73 = 309,003.64/x
  3. Step 3: Cross multiply
    481,000.25x = 664,172.73 × 309,003.64
  4. Step 4: Simplify right side
    481,000.25x = 205,231,789,498.31
  5. Step 5: Solve for x
    x = 205,231,789,498.31/481,000.25
  6. Step 6: Final answer
    x = 426,677.09

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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.