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Finding the Fourth Proportional to 235,129.37, 324,436.39 and 139,659.53

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Solution

The fourth proportional to 235,129.37, 324,436.39 and 139,659.53 is: 192,705.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,129.37 : 324,436.39 = 139,659.53 : x
  2. Step 2: Convert to fraction form
    235,129.37/324,436.39 = 139,659.53/x
  3. Step 3: Cross multiply
    235,129.37x = 324,436.39 × 139,659.53
  4. Step 4: Simplify right side
    235,129.37x = 45,310,631,770.97
  5. Step 5: Solve for x
    x = 45,310,631,770.97/235,129.37
  6. Step 6: Final answer
    x = 192,705.12

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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.