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Finding the Fourth Proportional to 376,979.84, 520,229.12 and 207,212.16

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Solution

The fourth proportional to 376,979.84, 520,229.12 and 207,212.16 is: 285,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,979.84 : 520,229.12 = 207,212.16 : x
  2. Step 2: Convert to fraction form
    376,979.84/520,229.12 = 207,212.16/x
  3. Step 3: Cross multiply
    376,979.84x = 520,229.12 × 207,212.16
  4. Step 4: Simplify right side
    376,979.84x = 107,797,799,650.10
  5. Step 5: Solve for x
    x = 107,797,799,650.10/376,979.84
  6. Step 6: Final answer
    x = 285,951.10

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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.