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Finding the Fourth Proportional to 418,844.56, 628,163.05 and 119,327.74

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Solution

The fourth proportional to 418,844.56, 628,163.05 and 119,327.74 is: 178,962.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,844.56 : 628,163.05 = 119,327.74 : x
  2. Step 2: Convert to fraction form
    418,844.56/628,163.05 = 119,327.74/x
  3. Step 3: Cross multiply
    418,844.56x = 628,163.05 × 119,327.74
  4. Step 4: Simplify right side
    418,844.56x = 74,957,273,370.55
  5. Step 5: Solve for x
    x = 74,957,273,370.55/418,844.56
  6. Step 6: Final answer
    x = 178,962.03

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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.