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Finding the Fourth Proportional to 439,033.56, 658,481.68 and 139,474.90

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Solution

The fourth proportional to 439,033.56, 658,481.68 and 139,474.90 is: 209,190.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,033.56 : 658,481.68 = 139,474.90 : x
  2. Step 2: Convert to fraction form
    439,033.56/658,481.68 = 139,474.90/x
  3. Step 3: Cross multiply
    439,033.56x = 658,481.68 × 139,474.90
  4. Step 4: Simplify right side
    439,033.56x = 91,841,666,469.83
  5. Step 5: Solve for x
    x = 91,841,666,469.83/439,033.56
  6. Step 6: Final answer
    x = 209,190.54

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1.5x scale

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.