Home / 211,711.08-317,629.01-85,286.27

Finding the Fourth Proportional to 211,711.08, 317,629.01 and 85,286.27

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Solution

The fourth proportional to 211,711.08, 317,629.01 and 85,286.27 is: 127,954.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,711.08 : 317,629.01 = 85,286.27 : x
  2. Step 2: Convert to fraction form
    211,711.08/317,629.01 = 85,286.27/x
  3. Step 3: Cross multiply
    211,711.08x = 317,629.01 × 85,286.27
  4. Step 4: Simplify right side
    211,711.08x = 27,089,393,293.48
  5. Step 5: Solve for x
    x = 27,089,393,293.48/211,711.08
  6. Step 6: Final answer
    x = 127,954.54

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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.