Home / 420,982.80-631,033.11-196,157.88

Finding the Fourth Proportional to 420,982.80, 631,033.11 and 196,157.88

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Solution

The fourth proportional to 420,982.80, 631,033.11 and 196,157.88 is: 294,031.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,982.80 : 631,033.11 = 196,157.88 : x
  2. Step 2: Convert to fraction form
    420,982.80/631,033.11 = 196,157.88/x
  3. Step 3: Cross multiply
    420,982.80x = 631,033.11 × 196,157.88
  4. Step 4: Simplify right side
    420,982.80x = 123,782,117,067.41
  5. Step 5: Solve for x
    x = 123,782,117,067.41/420,982.80
  6. Step 6: Final answer
    x = 294,031.29

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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.