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Finding the Fourth Proportional to 240,497.36, 331,915.20 and 139,895.36

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Solution

The fourth proportional to 240,497.36, 331,915.20 and 139,895.36 is: 193,072.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,497.36 : 331,915.20 = 139,895.36 : x
  2. Step 2: Convert to fraction form
    240,497.36/331,915.20 = 139,895.36/x
  3. Step 3: Cross multiply
    240,497.36x = 331,915.20 × 139,895.36
  4. Step 4: Simplify right side
    240,497.36x = 46,433,396,393.47
  5. Step 5: Solve for x
    x = 46,433,396,393.47/240,497.36
  6. Step 6: Final answer
    x = 193,072.37

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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.