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Finding the Fourth Proportional to 281,220.56, 421,160.01 and 179,699.56

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Solution

The fourth proportional to 281,220.56, 421,160.01 and 179,699.56 is: 269,120.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,220.56 : 421,160.01 = 179,699.56 : x
  2. Step 2: Convert to fraction form
    281,220.56/421,160.01 = 179,699.56/x
  3. Step 3: Cross multiply
    281,220.56x = 421,160.01 × 179,699.56
  4. Step 4: Simplify right side
    281,220.56x = 75,682,269,128.85
  5. Step 5: Solve for x
    x = 75,682,269,128.85/281,220.56
  6. Step 6: Final answer
    x = 269,120.68

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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.