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Finding the Fourth Proportional to 206,676.80, 310,015.20 and 88,481.60

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Solution

The fourth proportional to 206,676.80, 310,015.20 and 88,481.60 is: 132,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,676.80 : 310,015.20 = 88,481.60 : x
  2. Step 2: Convert to fraction form
    206,676.80/310,015.20 = 88,481.60/x
  3. Step 3: Cross multiply
    206,676.80x = 310,015.20 × 88,481.60
  4. Step 4: Simplify right side
    206,676.80x = 27,430,640,920.32
  5. Step 5: Solve for x
    x = 27,430,640,920.32/206,676.80
  6. Step 6: Final answer
    x = 132,722.40

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1.5x scale

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.