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Finding the Fourth Proportional to 216,080.70, 323,845.65 and 121,310.70

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Solution

The fourth proportional to 216,080.70, 323,845.65 and 121,310.70 is: 181,811.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,080.70 : 323,845.65 = 121,310.70 : x
  2. Step 2: Convert to fraction form
    216,080.70/323,845.65 = 121,310.70/x
  3. Step 3: Cross multiply
    216,080.70x = 323,845.65 × 121,310.70
  4. Step 4: Simplify right side
    216,080.70x = 39,285,942,493.46
  5. Step 5: Solve for x
    x = 39,285,942,493.46/216,080.70
  6. Step 6: Final answer
    x = 181,811.44

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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.