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Finding the Fourth Proportional to 207,777.90, 311,666.85 and 67,550.70

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Solution

The fourth proportional to 207,777.90, 311,666.85 and 67,550.70 is: 101,326.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,777.90 : 311,666.85 = 67,550.70 : x
  2. Step 2: Convert to fraction form
    207,777.90/311,666.85 = 67,550.70/x
  3. Step 3: Cross multiply
    207,777.90x = 311,666.85 × 67,550.70
  4. Step 4: Simplify right side
    207,777.90x = 21,053,313,884.30
  5. Step 5: Solve for x
    x = 21,053,313,884.30/207,777.90
  6. Step 6: Final answer
    x = 101,326.05

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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.