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Finding the Fourth Proportional to 665,884.54, 998,836.04 and 216,607.77

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Solution

The fourth proportional to 665,884.54, 998,836.04 and 216,607.77 is: 324,914.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,884.54 : 998,836.04 = 216,607.77 : x
  2. Step 2: Convert to fraction form
    665,884.54/998,836.04 = 216,607.77/x
  3. Step 3: Cross multiply
    665,884.54x = 998,836.04 × 216,607.77
  4. Step 4: Simplify right side
    665,884.54x = 216,355,647,220.03
  5. Step 5: Solve for x
    x = 216,355,647,220.03/665,884.54
  6. Step 6: Final answer
    x = 324,914.66

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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.