Home / 685,257.60-1,027,963.20-211,939.20

Finding the Fourth Proportional to 685,257.60, 1,027,963.20 and 211,939.20

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Solution

The fourth proportional to 685,257.60, 1,027,963.20 and 211,939.20 is: 317,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,257.60 : 1,027,963.20 = 211,939.20 : x
  2. Step 2: Convert to fraction form
    685,257.60/1,027,963.20 = 211,939.20/x
  3. Step 3: Cross multiply
    685,257.60x = 1,027,963.20 × 211,939.20
  4. Step 4: Simplify right side
    685,257.60x = 217,865,698,237.44
  5. Step 5: Solve for x
    x = 217,865,698,237.44/685,257.60
  6. Step 6: Final answer
    x = 317,932.55

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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.