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Finding the Fourth Proportional to 376,934.79, 520,171.70 and 207,179.85

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Solution

The fourth proportional to 376,934.79, 520,171.70 and 207,179.85 is: 285,909.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,934.79 : 520,171.70 = 207,179.85 : x
  2. Step 2: Convert to fraction form
    376,934.79/520,171.70 = 207,179.85/x
  3. Step 3: Cross multiply
    376,934.79x = 520,171.70 × 207,179.85
  4. Step 4: Simplify right side
    376,934.79x = 107,769,093,744.35
  5. Step 5: Solve for x
    x = 107,769,093,744.35/376,934.79
  6. Step 6: Final answer
    x = 285,909.12

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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.