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Finding the Fourth Proportional to 665,896.50, 998,844.75 and 198,952.50

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Solution

The fourth proportional to 665,896.50, 998,844.75 and 198,952.50 is: 298,428.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,896.50 : 998,844.75 = 198,952.50 : x
  2. Step 2: Convert to fraction form
    665,896.50/998,844.75 = 198,952.50/x
  3. Step 3: Cross multiply
    665,896.50x = 998,844.75 × 198,952.50
  4. Step 4: Simplify right side
    665,896.50x = 198,722,660,124.38
  5. Step 5: Solve for x
    x = 198,722,660,124.38/665,896.50
  6. Step 6: Final answer
    x = 298,428.75

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Similar ratio
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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.