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Finding the Fourth Proportional to 221,106.40, 331,659.60 and 73,343.20

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Solution

The fourth proportional to 221,106.40, 331,659.60 and 73,343.20 is: 110,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,106.40 : 331,659.60 = 73,343.20 : x
  2. Step 2: Convert to fraction form
    221,106.40/331,659.60 = 73,343.20/x
  3. Step 3: Cross multiply
    221,106.40x = 331,659.60 × 73,343.20
  4. Step 4: Simplify right side
    221,106.40x = 24,324,976,374.72
  5. Step 5: Solve for x
    x = 24,324,976,374.72/221,106.40
  6. Step 6: Final answer
    x = 110,014.80

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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.