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Finding the Fourth Proportional to 451,561.05, 677,263.82 and 211,700.61

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Solution

The fourth proportional to 451,561.05, 677,263.82 and 211,700.61 is: 317,514.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,561.05 : 677,263.82 = 211,700.61 : x
  2. Step 2: Convert to fraction form
    451,561.05/677,263.82 = 211,700.61/x
  3. Step 3: Cross multiply
    451,561.05x = 677,263.82 × 211,700.61
  4. Step 4: Simplify right side
    451,561.05x = 143,377,162,766.43
  5. Step 5: Solve for x
    x = 143,377,162,766.43/451,561.05
  6. Step 6: Final answer
    x = 317,514.46

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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.