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Finding the Fourth Proportional to 376,849.68, 520,081.56 and 215,755.44

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Solution

The fourth proportional to 376,849.68, 520,081.56 and 215,755.44 is: 297,759.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,849.68 : 520,081.56 = 215,755.44 : x
  2. Step 2: Convert to fraction form
    376,849.68/520,081.56 = 215,755.44/x
  3. Step 3: Cross multiply
    376,849.68x = 520,081.56 × 215,755.44
  4. Step 4: Simplify right side
    376,849.68x = 112,210,425,813.69
  5. Step 5: Solve for x
    x = 112,210,425,813.69/376,849.68
  6. Step 6: Final answer
    x = 297,759.11

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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.