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Finding the Fourth Proportional to 321,642.72, 481,676.44 and 226,639.44

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Solution

The fourth proportional to 321,642.72, 481,676.44 and 226,639.44 is: 339,404.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,642.72 : 481,676.44 = 226,639.44 : x
  2. Step 2: Convert to fraction form
    321,642.72/481,676.44 = 226,639.44/x
  3. Step 3: Cross multiply
    321,642.72x = 481,676.44 × 226,639.44
  4. Step 4: Simplify right side
    321,642.72x = 109,166,878,622.79
  5. Step 5: Solve for x
    x = 109,166,878,622.79/321,642.72
  6. Step 6: Final answer
    x = 339,404.16

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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.