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Finding the Fourth Proportional to 275,399.37, 379,747.57 and 190,368.81

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Solution

The fourth proportional to 275,399.37, 379,747.57 and 190,368.81 is: 262,499.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,399.37 : 379,747.57 = 190,368.81 : x
  2. Step 2: Convert to fraction form
    275,399.37/379,747.57 = 190,368.81/x
  3. Step 3: Cross multiply
    275,399.37x = 379,747.57 × 190,368.81
  4. Step 4: Simplify right side
    275,399.37x = 72,292,093,001.29
  5. Step 5: Solve for x
    x = 72,292,093,001.29/275,399.37
  6. Step 6: Final answer
    x = 262,499.12

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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.