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Finding the Fourth Proportional to 234,956.76, 324,092.79 and 139,395.75

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Solution

The fourth proportional to 234,956.76, 324,092.79 and 139,395.75 is: 192,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,956.76 : 324,092.79 = 139,395.75 : x
  2. Step 2: Convert to fraction form
    234,956.76/324,092.79 = 139,395.75/x
  3. Step 3: Cross multiply
    234,956.76x = 324,092.79 × 139,395.75
  4. Step 4: Simplify right side
    234,956.76x = 45,177,157,531.64
  5. Step 5: Solve for x
    x = 45,177,157,531.64/234,956.76
  6. Step 6: Final answer
    x = 192,278.60

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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.