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Finding the Fourth Proportional to 377,474, 520,917.82 and 207,711.78

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Solution

The fourth proportional to 377,474, 520,917.82 and 207,711.78 is: 286,644.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,474 : 520,917.82 = 207,711.78 : x
  2. Step 2: Convert to fraction form
    377,474/520,917.82 = 207,711.78/x
  3. Step 3: Cross multiply
    377,474x = 520,917.82 × 207,711.78
  4. Step 4: Simplify right side
    377,474x = 108,200,767,625.92
  5. Step 5: Solve for x
    x = 108,200,767,625.92/377,474
  6. Step 6: Final answer
    x = 286,644.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.