Home / 420,983.80-631,034.61-196,158.88

Finding the Fourth Proportional to 420,983.80, 631,034.61 and 196,158.88

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Solution

The fourth proportional to 420,983.80, 631,034.61 and 196,158.88 is: 294,032.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,983.80 : 631,034.61 = 196,158.88 : x
  2. Step 2: Convert to fraction form
    420,983.80/631,034.61 = 196,158.88/x
  3. Step 3: Cross multiply
    420,983.80x = 631,034.61 × 196,158.88
  4. Step 4: Simplify right side
    420,983.80x = 123,783,042,338.84
  5. Step 5: Solve for x
    x = 123,783,042,338.84/420,983.80
  6. Step 6: Final answer
    x = 294,032.79

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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.