Home / 211,947.30-317,723.31-71,607.78

Finding the Fourth Proportional to 211,947.30, 317,723.31 and 71,607.78

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Solution

The fourth proportional to 211,947.30, 317,723.31 and 71,607.78 is: 107,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,947.30 : 317,723.31 = 71,607.78 : x
  2. Step 2: Convert to fraction form
    211,947.30/317,723.31 = 71,607.78/x
  3. Step 3: Cross multiply
    211,947.30x = 317,723.31 × 71,607.78
  4. Step 4: Simplify right side
    211,947.30x = 22,751,460,883.35
  5. Step 5: Solve for x
    x = 22,751,460,883.35/211,947.30
  6. Step 6: Final answer
    x = 107,344.90

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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.