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Finding the Fourth Proportional to 482,855.28, 666,372.09 and 278,914.79

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Solution

The fourth proportional to 482,855.28, 666,372.09 and 278,914.79 is: 384,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,855.28 : 666,372.09 = 278,914.79 : x
  2. Step 2: Convert to fraction form
    482,855.28/666,372.09 = 278,914.79/x
  3. Step 3: Cross multiply
    482,855.28x = 666,372.09 × 278,914.79
  4. Step 4: Simplify right side
    482,855.28x = 185,861,028,212.35
  5. Step 5: Solve for x
    x = 185,861,028,212.35/482,855.28
  6. Step 6: Final answer
    x = 384,920.77

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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.