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Finding the Fourth Proportional to 418,571.27, 627,540.73 and 215,950.31

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Solution

The fourth proportional to 418,571.27, 627,540.73 and 215,950.31 is: 323,762.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,571.27 : 627,540.73 = 215,950.31 : x
  2. Step 2: Convert to fraction form
    418,571.27/627,540.73 = 215,950.31/x
  3. Step 3: Cross multiply
    418,571.27x = 627,540.73 × 215,950.31
  4. Step 4: Simplify right side
    418,571.27x = 135,517,615,181.13
  5. Step 5: Solve for x
    x = 135,517,615,181.13/418,571.27
  6. Step 6: Final answer
    x = 323,762.34

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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.