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Finding the Fourth Proportional to 320,748.31, 481,229.31 and 107,537.32

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Solution

The fourth proportional to 320,748.31, 481,229.31 and 107,537.32 is: 161,341.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,748.31 : 481,229.31 = 107,537.32 : x
  2. Step 2: Convert to fraction form
    320,748.31/481,229.31 = 107,537.32/x
  3. Step 3: Cross multiply
    320,748.31x = 481,229.31 × 107,537.32
  4. Step 4: Simplify right side
    320,748.31x = 51,750,107,896.70
  5. Step 5: Solve for x
    x = 51,750,107,896.70/320,748.31
  6. Step 6: Final answer
    x = 161,341.80

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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.