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Finding the Fourth Proportional to 644,622.60, 966,936.60 and 218,161.80

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Solution

The fourth proportional to 644,622.60, 966,936.60 and 218,161.80 is: 327,243.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,622.60 : 966,936.60 = 218,161.80 : x
  2. Step 2: Convert to fraction form
    644,622.60/966,936.60 = 218,161.80/x
  3. Step 3: Cross multiply
    644,622.60x = 966,936.60 × 218,161.80
  4. Step 4: Simplify right side
    644,622.60x = 210,948,629,141.88
  5. Step 5: Solve for x
    x = 210,948,629,141.88/644,622.60
  6. Step 6: Final answer
    x = 327,243.61

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1.5x scale

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.