Home / 198,664.40-298,342.20-105,352.40

Finding the Fourth Proportional to 198,664.40, 298,342.20 and 105,352.40

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Solution

The fourth proportional to 198,664.40, 298,342.20 and 105,352.40 is: 158,211.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,664.40 : 298,342.20 = 105,352.40 : x
  2. Step 2: Convert to fraction form
    198,664.40/298,342.20 = 105,352.40/x
  3. Step 3: Cross multiply
    198,664.40x = 298,342.20 × 105,352.40
  4. Step 4: Simplify right side
    198,664.40x = 31,431,066,791.28
  5. Step 5: Solve for x
    x = 31,431,066,791.28/198,664.40
  6. Step 6: Final answer
    x = 158,211.87

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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.