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Finding the Fourth Proportional to 418,727.36, 627,996.60 and 119,201.28

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Solution

The fourth proportional to 418,727.36, 627,996.60 and 119,201.28 is: 178,775.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,727.36 : 627,996.60 = 119,201.28 : x
  2. Step 2: Convert to fraction form
    418,727.36/627,996.60 = 119,201.28/x
  3. Step 3: Cross multiply
    418,727.36x = 627,996.60 × 119,201.28
  4. Step 4: Simplify right side
    418,727.36x = 74,857,998,555.65
  5. Step 5: Solve for x
    x = 74,857,998,555.65/418,727.36
  6. Step 6: Final answer
    x = 178,775.04

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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.