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Finding the Fourth Proportional to 207,402.20, 311,103.30 and 203,946.20

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Solution

The fourth proportional to 207,402.20, 311,103.30 and 203,946.20 is: 305,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,402.20 : 311,103.30 = 203,946.20 : x
  2. Step 2: Convert to fraction form
    207,402.20/311,103.30 = 203,946.20/x
  3. Step 3: Cross multiply
    207,402.20x = 311,103.30 × 203,946.20
  4. Step 4: Simplify right side
    207,402.20x = 63,448,335,842.46
  5. Step 5: Solve for x
    x = 63,448,335,842.46/207,402.20
  6. Step 6: Final answer
    x = 305,919.30

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Similar ratio
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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.