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Finding the Fourth Proportional to 198,730.98, 298,110.34 and 65,704.88

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Solution

The fourth proportional to 198,730.98, 298,110.34 and 65,704.88 is: 98,561.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,730.98 : 298,110.34 = 65,704.88 : x
  2. Step 2: Convert to fraction form
    198,730.98/298,110.34 = 65,704.88/x
  3. Step 3: Cross multiply
    198,730.98x = 298,110.34 × 65,704.88
  4. Step 4: Simplify right side
    198,730.98x = 19,587,304,116.46
  5. Step 5: Solve for x
    x = 19,587,304,116.46/198,730.98
  6. Step 6: Final answer
    x = 98,561.91

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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.