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Finding the Fourth Proportional to 339,996.60, 469,211.18 and 196,728.94

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Solution

The fourth proportional to 339,996.60, 469,211.18 and 196,728.94 is: 271,495.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,996.60 : 469,211.18 = 196,728.94 : x
  2. Step 2: Convert to fraction form
    339,996.60/469,211.18 = 196,728.94/x
  3. Step 3: Cross multiply
    339,996.60x = 469,211.18 × 196,728.94
  4. Step 4: Simplify right side
    339,996.60x = 92,307,418,077.55
  5. Step 5: Solve for x
    x = 92,307,418,077.55/339,996.60
  6. Step 6: Final answer
    x = 271,495.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.