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Finding the Fourth Proportional to 455,244.20, 682,866.30 and 218,529.80

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Solution

The fourth proportional to 455,244.20, 682,866.30 and 218,529.80 is: 327,794.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,244.20 : 682,866.30 = 218,529.80 : x
  2. Step 2: Convert to fraction form
    455,244.20/682,866.30 = 218,529.80/x
  3. Step 3: Cross multiply
    455,244.20x = 682,866.30 × 218,529.80
  4. Step 4: Simplify right side
    455,244.20x = 149,226,635,965.74
  5. Step 5: Solve for x
    x = 149,226,635,965.74/455,244.20
  6. Step 6: Final answer
    x = 327,794.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.