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Finding the Fourth Proportional to 220,887.60, 331,450.32 and 87,769.07

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Solution

The fourth proportional to 220,887.60, 331,450.32 and 87,769.07 is: 131,700.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,887.60 : 331,450.32 = 87,769.07 : x
  2. Step 2: Convert to fraction form
    220,887.60/331,450.32 = 87,769.07/x
  3. Step 3: Cross multiply
    220,887.60x = 331,450.32 × 87,769.07
  4. Step 4: Simplify right side
    220,887.60x = 29,091,084,680.35
  5. Step 5: Solve for x
    x = 29,091,084,680.35/220,887.60
  6. Step 6: Final answer
    x = 131,700.85

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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.