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Finding the Fourth Proportional to 234,918.72, 324,188.22 and 139,444.56

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Solution

The fourth proportional to 234,918.72, 324,188.22 and 139,444.56 is: 192,433.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,918.72 : 324,188.22 = 139,444.56 : x
  2. Step 2: Convert to fraction form
    234,918.72/324,188.22 = 139,444.56/x
  3. Step 3: Cross multiply
    234,918.72x = 324,188.22 × 139,444.56
  4. Step 4: Simplify right side
    234,918.72x = 45,206,283,695.08
  5. Step 5: Solve for x
    x = 45,206,283,695.08/234,918.72
  6. Step 6: Final answer
    x = 192,433.72

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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.