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Finding the Fourth Proportional to 418,963.33, 627,652.09 and 247,672.21

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Solution

The fourth proportional to 418,963.33, 627,652.09 and 247,672.21 is: 371,039.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,963.33 : 627,652.09 = 247,672.21 : x
  2. Step 2: Convert to fraction form
    418,963.33/627,652.09 = 247,672.21/x
  3. Step 3: Cross multiply
    418,963.33x = 627,652.09 × 247,672.21
  4. Step 4: Simplify right side
    418,963.33x = 155,451,980,241.42
  5. Step 5: Solve for x
    x = 155,451,980,241.42/418,963.33
  6. Step 6: Final answer
    x = 371,039.59

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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.