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Finding the Fourth Proportional to 198,760.45, 298,142.45 and 56,605.60

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Solution

The fourth proportional to 198,760.45, 298,142.45 and 56,605.60 is: 84,908.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,760.45 : 298,142.45 = 56,605.60 : x
  2. Step 2: Convert to fraction form
    198,760.45/298,142.45 = 56,605.60/x
  3. Step 3: Cross multiply
    198,760.45x = 298,142.45 × 56,605.60
  4. Step 4: Simplify right side
    198,760.45x = 16,876,532,267.72
  5. Step 5: Solve for x
    x = 16,876,532,267.72/198,760.45
  6. Step 6: Final answer
    x = 84,908.91

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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.