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Finding the Fourth Proportional to 376,867.91, 520,122.65 and 215,774.71

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Solution

The fourth proportional to 376,867.91, 520,122.65 and 215,774.71 is: 297,794.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,867.91 : 520,122.65 = 215,774.71 : x
  2. Step 2: Convert to fraction form
    376,867.91/520,122.65 = 215,774.71/x
  3. Step 3: Cross multiply
    376,867.91x = 520,122.65 × 215,774.71
  4. Step 4: Simplify right side
    376,867.91x = 112,229,311,589.00
  5. Step 5: Solve for x
    x = 112,229,311,589.00/376,867.91
  6. Step 6: Final answer
    x = 297,794.82

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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.