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Finding the Fourth Proportional to 207,956.90, 311,352.15 and 202,124.90

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Solution

The fourth proportional to 207,956.90, 311,352.15 and 202,124.90 is: 302,620.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,956.90 : 311,352.15 = 202,124.90 : x
  2. Step 2: Convert to fraction form
    207,956.90/311,352.15 = 202,124.90/x
  3. Step 3: Cross multiply
    207,956.90x = 311,352.15 × 202,124.90
  4. Step 4: Simplify right side
    207,956.90x = 62,932,022,183.54
  5. Step 5: Solve for x
    x = 62,932,022,183.54/207,956.90
  6. Step 6: Final answer
    x = 302,620.51

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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.