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Finding the Fourth Proportional to 198,605.28, 297,927.60 and 65,486.88

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Solution

The fourth proportional to 198,605.28, 297,927.60 and 65,486.88 is: 98,236.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,605.28 : 297,927.60 = 65,486.88 : x
  2. Step 2: Convert to fraction form
    198,605.28/297,927.60 = 65,486.88/x
  3. Step 3: Cross multiply
    198,605.28x = 297,927.60 × 65,486.88
  4. Step 4: Simplify right side
    198,605.28x = 19,510,348,989.89
  5. Step 5: Solve for x
    x = 19,510,348,989.89/198,605.28
  6. Step 6: Final answer
    x = 98,236.81

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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.