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Finding the Fourth Proportional to 198,672.79, 298,019.52 and 65,563.44

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Solution

The fourth proportional to 198,672.79, 298,019.52 and 65,563.44 is: 98,348.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,672.79 : 298,019.52 = 65,563.44 : x
  2. Step 2: Convert to fraction form
    198,672.79/298,019.52 = 65,563.44/x
  3. Step 3: Cross multiply
    198,672.79x = 298,019.52 × 65,563.44
  4. Step 4: Simplify right side
    198,672.79x = 19,539,184,918.35
  5. Step 5: Solve for x
    x = 19,539,184,918.35/198,672.79
  6. Step 6: Final answer
    x = 98,348.57

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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.