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Finding the Fourth Proportional to 253,745.48, 350,163.40 and 139,018.54

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Solution

The fourth proportional to 253,745.48, 350,163.40 and 139,018.54 is: 191,842.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,745.48 : 350,163.40 = 139,018.54 : x
  2. Step 2: Convert to fraction form
    253,745.48/350,163.40 = 139,018.54/x
  3. Step 3: Cross multiply
    253,745.48x = 350,163.40 × 139,018.54
  4. Step 4: Simplify right side
    253,745.48x = 48,679,204,629.44
  5. Step 5: Solve for x
    x = 48,679,204,629.44/253,745.48
  6. Step 6: Final answer
    x = 191,842.65

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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.