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Finding the Fourth Proportional to 664,337.20, 996,651.60 and 214,981.60

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Solution

The fourth proportional to 664,337.20, 996,651.60 and 214,981.60 is: 322,519.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,337.20 : 996,651.60 = 214,981.60 : x
  2. Step 2: Convert to fraction form
    664,337.20/996,651.60 = 214,981.60/x
  3. Step 3: Cross multiply
    664,337.20x = 996,651.60 × 214,981.60
  4. Step 4: Simplify right side
    664,337.20x = 214,261,755,610.56
  5. Step 5: Solve for x
    x = 214,261,755,610.56/664,337.20
  6. Step 6: Final answer
    x = 322,519.58

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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.