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Finding the Fourth Proportional to 250,538.44, 345,742.32 and 137,361.28

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Solution

The fourth proportional to 250,538.44, 345,742.32 and 137,361.28 is: 189,558.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,538.44 : 345,742.32 = 137,361.28 : x
  2. Step 2: Convert to fraction form
    250,538.44/345,742.32 = 137,361.28/x
  3. Step 3: Cross multiply
    250,538.44x = 345,742.32 × 137,361.28
  4. Step 4: Simplify right side
    250,538.44x = 47,491,607,625.37
  5. Step 5: Solve for x
    x = 47,491,607,625.37/250,538.44
  6. Step 6: Final answer
    x = 189,558.17

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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.