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Finding the Fourth Proportional to 664,105.60, 996,028.80 and 214,717.60

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Solution

The fourth proportional to 664,105.60, 996,028.80 and 214,717.60 is: 322,034.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,105.60 : 996,028.80 = 214,717.60 : x
  2. Step 2: Convert to fraction form
    664,105.60/996,028.80 = 214,717.60/x
  3. Step 3: Cross multiply
    664,105.60x = 996,028.80 × 214,717.60
  4. Step 4: Simplify right side
    664,105.60x = 213,864,913,466.88
  5. Step 5: Solve for x
    x = 213,864,913,466.88/664,105.60
  6. Step 6: Final answer
    x = 322,034.50

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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.