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Finding the Fourth Proportional to 220,704.40, 331,056.60 and 80,467.60

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Solution

The fourth proportional to 220,704.40, 331,056.60 and 80,467.60 is: 120,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,704.40 : 331,056.60 = 80,467.60 : x
  2. Step 2: Convert to fraction form
    220,704.40/331,056.60 = 80,467.60/x
  3. Step 3: Cross multiply
    220,704.40x = 331,056.60 × 80,467.60
  4. Step 4: Simplify right side
    220,704.40x = 26,639,330,066.16
  5. Step 5: Solve for x
    x = 26,639,330,066.16/220,704.40
  6. Step 6: Final answer
    x = 120,701.40

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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.