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Finding the Fourth Proportional to 18,321,919.20, 27,475,880.40 and 5,538,175.20

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Solution

The fourth proportional to 18,321,919.20, 27,475,880.40 and 5,538,175.20 is: 8,305,147.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321,919.20 : 27,475,880.40 = 5,538,175.20 : x
  2. Step 2: Convert to fraction form
    18,321,919.20/27,475,880.40 = 5,538,175.20/x
  3. Step 3: Cross multiply
    18,321,919.20x = 27,475,880.40 × 5,538,175.20
  4. Step 4: Simplify right side
    18,321,919.20x = 152,166,239,429,446.06
  5. Step 5: Solve for x
    x = 152,166,239,429,446.06/18,321,919.20
  6. Step 6: Final answer
    x = 8,305,147.39

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.