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Finding the Fourth Proportional to 376,927.40, 520,153.78 and 207,157.88

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Solution

The fourth proportional to 376,927.40, 520,153.78 and 207,157.88 is: 285,874.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,927.40 : 520,153.78 = 207,157.88 : x
  2. Step 2: Convert to fraction form
    376,927.40/520,153.78 = 207,157.88/x
  3. Step 3: Cross multiply
    376,927.40x = 520,153.78 × 207,157.88
  4. Step 4: Simplify right side
    376,927.40x = 107,753,954,338.79
  5. Step 5: Solve for x
    x = 107,753,954,338.79/376,927.40
  6. Step 6: Final answer
    x = 285,874.56

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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.