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Finding the Fourth Proportional to 418,720.62, 627,986.61 and 119,194.59

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Solution

The fourth proportional to 418,720.62, 627,986.61 and 119,194.59 is: 178,765.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,720.62 : 627,986.61 = 119,194.59 : x
  2. Step 2: Convert to fraction form
    418,720.62/627,986.61 = 119,194.59/x
  3. Step 3: Cross multiply
    418,720.62x = 627,986.61 × 119,194.59
  4. Step 4: Simplify right side
    418,720.62x = 74,852,606,504.44
  5. Step 5: Solve for x
    x = 74,852,606,504.44/418,720.62
  6. Step 6: Final answer
    x = 178,765.04

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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.