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Finding the Fourth Proportional to 264,940.20, 397,410.30 and 87,474.60

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Solution

The fourth proportional to 264,940.20, 397,410.30 and 87,474.60 is: 131,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,940.20 : 397,410.30 = 87,474.60 : x
  2. Step 2: Convert to fraction form
    264,940.20/397,410.30 = 87,474.60/x
  3. Step 3: Cross multiply
    264,940.20x = 397,410.30 × 87,474.60
  4. Step 4: Simplify right side
    264,940.20x = 34,763,307,028.38
  5. Step 5: Solve for x
    x = 34,763,307,028.38/264,940.20
  6. Step 6: Final answer
    x = 131,211.90

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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.