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Finding the Fourth Proportional to 235,322.78, 324,773.07 and 139,829.54

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Solution

The fourth proportional to 235,322.78, 324,773.07 and 139,829.54 is: 192,981.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,322.78 : 324,773.07 = 139,829.54 : x
  2. Step 2: Convert to fraction form
    235,322.78/324,773.07 = 139,829.54/x
  3. Step 3: Cross multiply
    235,322.78x = 324,773.07 × 139,829.54
  4. Step 4: Simplify right side
    235,322.78x = 45,412,868,982.49
  5. Step 5: Solve for x
    x = 45,412,868,982.49/235,322.78
  6. Step 6: Final answer
    x = 192,981.19

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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.