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Finding the Fourth Proportional to 220,663.44, 330,704.64 and 87,471.09

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Solution

The fourth proportional to 220,663.44, 330,704.64 and 87,471.09 is: 131,091.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,663.44 : 330,704.64 = 87,471.09 : x
  2. Step 2: Convert to fraction form
    220,663.44/330,704.64 = 87,471.09/x
  3. Step 3: Cross multiply
    220,663.44x = 330,704.64 × 87,471.09
  4. Step 4: Simplify right side
    220,663.44x = 28,927,095,328.86
  5. Step 5: Solve for x
    x = 28,927,095,328.86/220,663.44
  6. Step 6: Final answer
    x = 131,091.47

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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.