Home / 207,964.20-311,946.30-206,214.60

Finding the Fourth Proportional to 207,964.20, 311,946.30 and 206,214.60

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Solution

The fourth proportional to 207,964.20, 311,946.30 and 206,214.60 is: 309,321.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,964.20 : 311,946.30 = 206,214.60 : x
  2. Step 2: Convert to fraction form
    207,964.20/311,946.30 = 206,214.60/x
  3. Step 3: Cross multiply
    207,964.20x = 311,946.30 × 206,214.60
  4. Step 4: Simplify right side
    207,964.20x = 64,327,881,475.98
  5. Step 5: Solve for x
    x = 64,327,881,475.98/207,964.20
  6. Step 6: Final answer
    x = 309,321.90

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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.