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Finding the Fourth Proportional to 419,541.80, 627,930.30 and 325,538.60

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Solution

The fourth proportional to 419,541.80, 627,930.30 and 325,538.60 is: 487,235.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,541.80 : 627,930.30 = 325,538.60 : x
  2. Step 2: Convert to fraction form
    419,541.80/627,930.30 = 325,538.60/x
  3. Step 3: Cross multiply
    419,541.80x = 627,930.30 × 325,538.60
  4. Step 4: Simplify right side
    419,541.80x = 204,415,550,759.58
  5. Step 5: Solve for x
    x = 204,415,550,759.58/419,541.80
  6. Step 6: Final answer
    x = 487,235.24

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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.