Home / 211,831.56-317,743.20-85,469.22

Finding the Fourth Proportional to 211,831.56, 317,743.20 and 85,469.22

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Solution

The fourth proportional to 211,831.56, 317,743.20 and 85,469.22 is: 128,202.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,831.56 : 317,743.20 = 85,469.22 : x
  2. Step 2: Convert to fraction form
    211,831.56/317,743.20 = 85,469.22/x
  3. Step 3: Cross multiply
    211,831.56x = 317,743.20 × 85,469.22
  4. Step 4: Simplify right side
    211,831.56x = 27,157,263,464.30
  5. Step 5: Solve for x
    x = 27,157,263,464.30/211,831.56
  6. Step 6: Final answer
    x = 128,202.16

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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.