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Finding the Fourth Proportional to 664,343.20, 996,660.60 and 214,987.60

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Solution

The fourth proportional to 664,343.20, 996,660.60 and 214,987.60 is: 322,528.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,343.20 : 996,660.60 = 214,987.60 : x
  2. Step 2: Convert to fraction form
    664,343.20/996,660.60 = 214,987.60/x
  3. Step 3: Cross multiply
    664,343.20x = 996,660.60 × 214,987.60
  4. Step 4: Simplify right side
    664,343.20x = 214,269,670,408.56
  5. Step 5: Solve for x
    x = 214,269,670,408.56/664,343.20
  6. Step 6: Final answer
    x = 322,528.58

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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.