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Finding the Fourth Proportional to 207,717.90, 311,629.38 and 57,958.12

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Solution

The fourth proportional to 207,717.90, 311,629.38 and 57,958.12 is: 86,951.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,717.90 : 311,629.38 = 57,958.12 : x
  2. Step 2: Convert to fraction form
    207,717.90/311,629.38 = 57,958.12/x
  3. Step 3: Cross multiply
    207,717.90x = 311,629.38 × 57,958.12
  4. Step 4: Simplify right side
    207,717.90x = 18,061,453,001.57
  5. Step 5: Solve for x
    x = 18,061,453,001.57/207,717.90
  6. Step 6: Final answer
    x = 86,951.84

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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.