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Finding the Fourth Proportional to 240,495.36, 331,912.44 and 139,893.36

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Solution

The fourth proportional to 240,495.36, 331,912.44 and 139,893.36 is: 193,069.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,495.36 : 331,912.44 = 139,893.36 : x
  2. Step 2: Convert to fraction form
    240,495.36/331,912.44 = 139,893.36/x
  3. Step 3: Cross multiply
    240,495.36x = 331,912.44 × 139,893.36
  4. Step 4: Simplify right side
    240,495.36x = 46,432,346,457.40
  5. Step 5: Solve for x
    x = 46,432,346,457.40/240,495.36
  6. Step 6: Final answer
    x = 193,069.61

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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.