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Finding the Fourth Proportional to 253,791.48, 350,218 and 139,048.48

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Solution

The fourth proportional to 253,791.48, 350,218 and 139,048.48 is: 191,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,791.48 : 350,218 = 139,048.48 : x
  2. Step 2: Convert to fraction form
    253,791.48/350,218 = 139,048.48/x
  3. Step 3: Cross multiply
    253,791.48x = 350,218 × 139,048.48
  4. Step 4: Simplify right side
    253,791.48x = 48,697,280,568.64
  5. Step 5: Solve for x
    x = 48,697,280,568.64/253,791.48
  6. Step 6: Final answer
    x = 191,879.10

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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.