Home / 252,214.20-378,321.30-211,663.80

Finding the Fourth Proportional to 252,214.20, 378,321.30 and 211,663.80

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Solution

The fourth proportional to 252,214.20, 378,321.30 and 211,663.80 is: 317,495.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,214.20 : 378,321.30 = 211,663.80 : x
  2. Step 2: Convert to fraction form
    252,214.20/378,321.30 = 211,663.80/x
  3. Step 3: Cross multiply
    252,214.20x = 378,321.30 × 211,663.80
  4. Step 4: Simplify right side
    252,214.20x = 80,076,923,978.94
  5. Step 5: Solve for x
    x = 80,076,923,978.94/252,214.20
  6. Step 6: Final answer
    x = 317,495.70

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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.