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Finding the Fourth Proportional to 376,676.12, 519,665.83 and 215,445.02

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Solution

The fourth proportional to 376,676.12, 519,665.83 and 215,445.02 is: 297,229.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,676.12 : 519,665.83 = 215,445.02 : x
  2. Step 2: Convert to fraction form
    376,676.12/519,665.83 = 215,445.02/x
  3. Step 3: Cross multiply
    376,676.12x = 519,665.83 × 215,445.02
  4. Step 4: Simplify right side
    376,676.12x = 111,959,412,000.73
  5. Step 5: Solve for x
    x = 111,959,412,000.73/376,676.12
  6. Step 6: Final answer
    x = 297,229.92

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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.