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Finding the Fourth Proportional to 418,976.94, 628,523.72 and 134,676.24

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Solution

The fourth proportional to 418,976.94, 628,523.72 and 134,676.24 is: 202,033.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,976.94 : 628,523.72 = 134,676.24 : x
  2. Step 2: Convert to fraction form
    418,976.94/628,523.72 = 134,676.24/x
  3. Step 3: Cross multiply
    418,976.94x = 628,523.72 × 134,676.24
  4. Step 4: Simplify right side
    418,976.94x = 84,647,211,360.41
  5. Step 5: Solve for x
    x = 84,647,211,360.41/418,976.94
  6. Step 6: Final answer
    x = 202,033.10

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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.