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Finding the Fourth Proportional to 207,906.70, 311,860.05 and 192,160.30

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Solution

The fourth proportional to 207,906.70, 311,860.05 and 192,160.30 is: 288,240.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,906.70 : 311,860.05 = 192,160.30 : x
  2. Step 2: Convert to fraction form
    207,906.70/311,860.05 = 192,160.30/x
  3. Step 3: Cross multiply
    207,906.70x = 311,860.05 × 192,160.30
  4. Step 4: Simplify right side
    207,906.70x = 59,927,120,766.02
  5. Step 5: Solve for x
    x = 59,927,120,766.02/207,906.70
  6. Step 6: Final answer
    x = 288,240.45

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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.