Home / 211,923.30-317,687.31-71,583.78

Finding the Fourth Proportional to 211,923.30, 317,687.31 and 71,583.78

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Solution

The fourth proportional to 211,923.30, 317,687.31 and 71,583.78 is: 107,308.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,923.30 : 317,687.31 = 71,583.78 : x
  2. Step 2: Convert to fraction form
    211,923.30/317,687.31 = 71,583.78/x
  3. Step 3: Cross multiply
    211,923.30x = 317,687.31 × 71,583.78
  4. Step 4: Simplify right side
    211,923.30x = 22,741,258,507.83
  5. Step 5: Solve for x
    x = 22,741,258,507.83/211,923.30
  6. Step 6: Final answer
    x = 107,308.91

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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.