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Finding the Fourth Proportional to 234,922, 324,084.72 and 139,374.40

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Solution

The fourth proportional to 234,922, 324,084.72 and 139,374.40 is: 192,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,922 : 324,084.72 = 139,374.40 : x
  2. Step 2: Convert to fraction form
    234,922/324,084.72 = 139,374.40/x
  3. Step 3: Cross multiply
    234,922x = 324,084.72 × 139,374.40
  4. Step 4: Simplify right side
    234,922x = 45,169,113,399.17
  5. Step 5: Solve for x
    x = 45,169,113,399.17/234,922
  6. Step 6: Final answer
    x = 192,272.81

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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.