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Finding the Fourth Proportional to 240,304.96, 331,662 and 139,761.28

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Solution

The fourth proportional to 240,304.96, 331,662 and 139,761.28 is: 192,894.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,304.96 : 331,662 = 139,761.28 : x
  2. Step 2: Convert to fraction form
    240,304.96/331,662 = 139,761.28/x
  3. Step 3: Cross multiply
    240,304.96x = 331,662 × 139,761.28
  4. Step 4: Simplify right side
    240,304.96x = 46,353,505,647.36
  5. Step 5: Solve for x
    x = 46,353,505,647.36/240,304.96
  6. Step 6: Final answer
    x = 192,894.50

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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.