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Finding the Fourth Proportional to 217,285.80, 325,539.90 and 134,082.60

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Solution

The fourth proportional to 217,285.80, 325,539.90 and 134,082.60 is: 200,883.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,285.80 : 325,539.90 = 134,082.60 : x
  2. Step 2: Convert to fraction form
    217,285.80/325,539.90 = 134,082.60/x
  3. Step 3: Cross multiply
    217,285.80x = 325,539.90 × 134,082.60
  4. Step 4: Simplify right side
    217,285.80x = 43,649,236,195.74
  5. Step 5: Solve for x
    x = 43,649,236,195.74/217,285.80
  6. Step 6: Final answer
    x = 200,883.98

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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.