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Finding the Fourth Proportional to 418,247.73, 627,370.34 and 118,728.57

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Solution

The fourth proportional to 418,247.73, 627,370.34 and 118,728.57 is: 178,092.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,247.73 : 627,370.34 = 118,728.57 : x
  2. Step 2: Convert to fraction form
    418,247.73/627,370.34 = 118,728.57/x
  3. Step 3: Cross multiply
    418,247.73x = 627,370.34 × 118,728.57
  4. Step 4: Simplify right side
    418,247.73x = 74,486,782,734.97
  5. Step 5: Solve for x
    x = 74,486,782,734.97/418,247.73
  6. Step 6: Final answer
    x = 178,092.50

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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.