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Finding the Fourth Proportional to 198,856.06, 298,330.80 and 65,736.31

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Solution

The fourth proportional to 198,856.06, 298,330.80 and 65,736.31 is: 98,619.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,856.06 : 298,330.80 = 65,736.31 : x
  2. Step 2: Convert to fraction form
    198,856.06/298,330.80 = 65,736.31/x
  3. Step 3: Cross multiply
    198,856.06x = 298,330.80 × 65,736.31
  4. Step 4: Simplify right side
    198,856.06x = 19,611,165,518.38
  5. Step 5: Solve for x
    x = 19,611,165,518.38/198,856.06
  6. Step 6: Final answer
    x = 98,619.90

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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.