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Finding the Fourth Proportional to 376,998, 520,257.24 and 215,906.34

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Solution

The fourth proportional to 376,998, 520,257.24 and 215,906.34 is: 297,950.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,998 : 520,257.24 = 215,906.34 : x
  2. Step 2: Convert to fraction form
    376,998/520,257.24 = 215,906.34/x
  3. Step 3: Cross multiply
    376,998x = 520,257.24 × 215,906.34
  4. Step 4: Simplify right side
    376,998x = 112,326,836,546.90
  5. Step 5: Solve for x
    x = 112,326,836,546.90/376,998
  6. Step 6: Final answer
    x = 297,950.75

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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.