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Finding the Fourth Proportional to 326,734.20, 490,101.30 and 206,886.60

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Solution

The fourth proportional to 326,734.20, 490,101.30 and 206,886.60 is: 310,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,734.20 : 490,101.30 = 206,886.60 : x
  2. Step 2: Convert to fraction form
    326,734.20/490,101.30 = 206,886.60/x
  3. Step 3: Cross multiply
    326,734.20x = 490,101.30 × 206,886.60
  4. Step 4: Simplify right side
    326,734.20x = 101,395,391,612.58
  5. Step 5: Solve for x
    x = 101,395,391,612.58/326,734.20
  6. Step 6: Final answer
    x = 310,329.90

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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.