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Finding the Fourth Proportional to 418,219.89, 627,297.56 and 133,940.19

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Solution

The fourth proportional to 418,219.89, 627,297.56 and 133,940.19 is: 200,899.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,219.89 : 627,297.56 = 133,940.19 : x
  2. Step 2: Convert to fraction form
    418,219.89/627,297.56 = 133,940.19/x
  3. Step 3: Cross multiply
    418,219.89x = 627,297.56 × 133,940.19
  4. Step 4: Simplify right side
    418,219.89x = 84,020,354,372.94
  5. Step 5: Solve for x
    x = 84,020,354,372.94/418,219.89
  6. Step 6: Final answer
    x = 200,899.95

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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.