Home / 215,851.40-323,777.10-206,520.20

Finding the Fourth Proportional to 215,851.40, 323,777.10 and 206,520.20

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Solution

The fourth proportional to 215,851.40, 323,777.10 and 206,520.20 is: 309,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,851.40 : 323,777.10 = 206,520.20 : x
  2. Step 2: Convert to fraction form
    215,851.40/323,777.10 = 206,520.20/x
  3. Step 3: Cross multiply
    215,851.40x = 323,777.10 × 206,520.20
  4. Step 4: Simplify right side
    215,851.40x = 66,866,511,447.42
  5. Step 5: Solve for x
    x = 66,866,511,447.42/215,851.40
  6. Step 6: Final answer
    x = 309,780.30

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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.