Home / 310,789.16-428,733.78-196,209.80

Finding the Fourth Proportional to 310,789.16, 428,733.78 and 196,209.80

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Solution

The fourth proportional to 310,789.16, 428,733.78 and 196,209.80 is: 270,671.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,789.16 : 428,733.78 = 196,209.80 : x
  2. Step 2: Convert to fraction form
    310,789.16/428,733.78 = 196,209.80/x
  3. Step 3: Cross multiply
    310,789.16x = 428,733.78 × 196,209.80
  4. Step 4: Simplify right side
    310,789.16x = 84,121,769,227.04
  5. Step 5: Solve for x
    x = 84,121,769,227.04/310,789.16
  6. Step 6: Final answer
    x = 270,671.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.