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Finding the Fourth Proportional to 376,697.82, 519,932.67 and 215,645.94

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Solution

The fourth proportional to 376,697.82, 519,932.67 and 215,645.94 is: 297,642.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,697.82 : 519,932.67 = 215,645.94 : x
  2. Step 2: Convert to fraction form
    376,697.82/519,932.67 = 215,645.94/x
  3. Step 3: Cross multiply
    376,697.82x = 519,932.67 × 215,645.94
  4. Step 4: Simplify right side
    376,697.82x = 112,121,369,358.86
  5. Step 5: Solve for x
    x = 112,121,369,358.86/376,697.82
  6. Step 6: Final answer
    x = 297,642.73

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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.