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Finding the Fourth Proportional to 418,083.44, 627,202.94 and 137,620.40

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Solution

The fourth proportional to 418,083.44, 627,202.94 and 137,620.40 is: 206,456.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,083.44 : 627,202.94 = 137,620.40 : x
  2. Step 2: Convert to fraction form
    418,083.44/627,202.94 = 137,620.40/x
  3. Step 3: Cross multiply
    418,083.44x = 627,202.94 × 137,620.40
  4. Step 4: Simplify right side
    418,083.44x = 86,315,919,483.98
  5. Step 5: Solve for x
    x = 86,315,919,483.98/418,083.44
  6. Step 6: Final answer
    x = 206,456.20

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1.5x scale

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.