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Finding the Fourth Proportional to 418,845.44, 628,164.36 and 119,328.61

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Solution

The fourth proportional to 418,845.44, 628,164.36 and 119,328.61 is: 178,963.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,845.44 : 628,164.36 = 119,328.61 : x
  2. Step 2: Convert to fraction form
    418,845.44/628,164.36 = 119,328.61/x
  3. Step 3: Cross multiply
    418,845.44x = 628,164.36 × 119,328.61
  4. Step 4: Simplify right side
    418,845.44x = 74,957,979,930.34
  5. Step 5: Solve for x
    x = 74,957,979,930.34/418,845.44
  6. Step 6: Final answer
    x = 178,963.34

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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.