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Finding the Fourth Proportional to 376,882.16, 520,072.92 and 215,738.48

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Solution

The fourth proportional to 376,882.16, 520,072.92 and 215,738.48 is: 297,705.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,882.16 : 520,072.92 = 215,738.48 : x
  2. Step 2: Convert to fraction form
    376,882.16/520,072.92 = 215,738.48/x
  3. Step 3: Cross multiply
    376,882.16x = 520,072.92 × 215,738.48
  4. Step 4: Simplify right side
    376,882.16x = 112,199,741,249.96
  5. Step 5: Solve for x
    x = 112,199,741,249.96/376,882.16
  6. Step 6: Final answer
    x = 297,705.10

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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.