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Finding the Fourth Proportional to 321,079.72, 481,636.86 and 133,902.76

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Solution

The fourth proportional to 321,079.72, 481,636.86 and 133,902.76 is: 200,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,079.72 : 481,636.86 = 133,902.76 : x
  2. Step 2: Convert to fraction form
    321,079.72/481,636.86 = 133,902.76/x
  3. Step 3: Cross multiply
    321,079.72x = 481,636.86 × 133,902.76
  4. Step 4: Simplify right side
    321,079.72x = 64,492,504,871.73
  5. Step 5: Solve for x
    x = 64,492,504,871.73/321,079.72
  6. Step 6: Final answer
    x = 200,861.35

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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.