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Finding the Fourth Proportional to 246,912.47, 340,766.86 and 139,489.42

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Solution

The fourth proportional to 246,912.47, 340,766.86 and 139,489.42 is: 192,511.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,912.47 : 340,766.86 = 139,489.42 : x
  2. Step 2: Convert to fraction form
    246,912.47/340,766.86 = 139,489.42/x
  3. Step 3: Cross multiply
    246,912.47x = 340,766.86 × 139,489.42
  4. Step 4: Simplify right side
    246,912.47x = 47,533,371,656.62
  5. Step 5: Solve for x
    x = 47,533,371,656.62/246,912.47
  6. Step 6: Final answer
    x = 192,511.02

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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.