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Finding the Fourth Proportional to 664,307.20, 996,606.60 and 214,951.60

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Solution

The fourth proportional to 664,307.20, 996,606.60 and 214,951.60 is: 322,474.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,307.20 : 996,606.60 = 214,951.60 : x
  2. Step 2: Convert to fraction form
    664,307.20/996,606.60 = 214,951.60/x
  3. Step 3: Cross multiply
    664,307.20x = 996,606.60 × 214,951.60
  4. Step 4: Simplify right side
    664,307.20x = 214,222,183,240.56
  5. Step 5: Solve for x
    x = 214,222,183,240.56/664,307.20
  6. Step 6: Final answer
    x = 322,474.58

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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.