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Finding the Fourth Proportional to 198,479.72, 298,102.55 and 170,081.06

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Solution

The fourth proportional to 198,479.72, 298,102.55 and 170,081.06 is: 255,449.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,479.72 : 298,102.55 = 170,081.06 : x
  2. Step 2: Convert to fraction form
    198,479.72/298,102.55 = 170,081.06/x
  3. Step 3: Cross multiply
    198,479.72x = 298,102.55 × 170,081.06
  4. Step 4: Simplify right side
    198,479.72x = 50,701,595,351.79
  5. Step 5: Solve for x
    x = 50,701,595,351.79/198,479.72
  6. Step 6: Final answer
    x = 255,449.75

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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.