Home / 621,026.80-931,540.20-221,680.60

Finding the Fourth Proportional to 621,026.80, 931,540.20 and 221,680.60

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Solution

The fourth proportional to 621,026.80, 931,540.20 and 221,680.60 is: 332,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,026.80 : 931,540.20 = 221,680.60 : x
  2. Step 2: Convert to fraction form
    621,026.80/931,540.20 = 221,680.60/x
  3. Step 3: Cross multiply
    621,026.80x = 931,540.20 × 221,680.60
  4. Step 4: Simplify right side
    621,026.80x = 206,504,390,460.12
  5. Step 5: Solve for x
    x = 206,504,390,460.12/621,026.80
  6. Step 6: Final answer
    x = 332,520.90

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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.