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Finding the Fourth Proportional to 234,969.26, 324,012.42 and 139,457.48

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Solution

The fourth proportional to 234,969.26, 324,012.42 and 139,457.48 is: 192,305.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,969.26 : 324,012.42 = 139,457.48 : x
  2. Step 2: Convert to fraction form
    234,969.26/324,012.42 = 139,457.48/x
  3. Step 3: Cross multiply
    234,969.26x = 324,012.42 × 139,457.48
  4. Step 4: Simplify right side
    234,969.26x = 45,185,955,581.90
  5. Step 5: Solve for x
    x = 45,185,955,581.90/234,969.26
  6. Step 6: Final answer
    x = 192,305.82

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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.