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Finding the Fourth Proportional to 321,989.60, 482,984.40 and 188,933.60

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Solution

The fourth proportional to 321,989.60, 482,984.40 and 188,933.60 is: 283,400.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,989.60 : 482,984.40 = 188,933.60 : x
  2. Step 2: Convert to fraction form
    321,989.60/482,984.40 = 188,933.60/x
  3. Step 3: Cross multiply
    321,989.60x = 482,984.40 × 188,933.60
  4. Step 4: Simplify right side
    321,989.60x = 91,251,981,435.84
  5. Step 5: Solve for x
    x = 91,251,981,435.84/321,989.60
  6. Step 6: Final answer
    x = 283,400.40

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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.