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Finding the Fourth Proportional to 216,046.20, 323,793.90 and 121,276.20

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Solution

The fourth proportional to 216,046.20, 323,793.90 and 121,276.20 is: 181,759.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,046.20 : 323,793.90 = 121,276.20 : x
  2. Step 2: Convert to fraction form
    216,046.20/323,793.90 = 121,276.20/x
  3. Step 3: Cross multiply
    216,046.20x = 323,793.90 × 121,276.20
  4. Step 4: Simplify right side
    216,046.20x = 39,268,493,775.18
  5. Step 5: Solve for x
    x = 39,268,493,775.18/216,046.20
  6. Step 6: Final answer
    x = 181,759.71

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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.