Home / 345,454.92-517,789.29-210,220.73

Finding the Fourth Proportional to 345,454.92, 517,789.29 and 210,220.73

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Solution

The fourth proportional to 345,454.92, 517,789.29 and 210,220.73 is: 315,091.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,454.92 : 517,789.29 = 210,220.73 : x
  2. Step 2: Convert to fraction form
    345,454.92/517,789.29 = 210,220.73/x
  3. Step 3: Cross multiply
    345,454.92x = 517,789.29 × 210,220.73
  4. Step 4: Simplify right side
    345,454.92x = 108,850,039,941.04
  5. Step 5: Solve for x
    x = 108,850,039,941.04/345,454.92
  6. Step 6: Final answer
    x = 315,091.88

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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.