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Finding the Fourth Proportional to 198,424.50, 297,679.86 and 65,318.28

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Solution

The fourth proportional to 198,424.50, 297,679.86 and 65,318.28 is: 97,991.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,424.50 : 297,679.86 = 65,318.28 : x
  2. Step 2: Convert to fraction form
    198,424.50/297,679.86 = 65,318.28/x
  3. Step 3: Cross multiply
    198,424.50x = 297,679.86 × 65,318.28
  4. Step 4: Simplify right side
    198,424.50x = 19,443,936,445.84
  5. Step 5: Solve for x
    x = 19,443,936,445.84/198,424.50
  6. Step 6: Final answer
    x = 97,991.61

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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.