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Finding the Fourth Proportional to 274,857.42, 379,296.63 and 154,003.80

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Solution

The fourth proportional to 274,857.42, 379,296.63 and 154,003.80 is: 212,521.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,857.42 : 379,296.63 = 154,003.80 : x
  2. Step 2: Convert to fraction form
    274,857.42/379,296.63 = 154,003.80/x
  3. Step 3: Cross multiply
    274,857.42x = 379,296.63 × 154,003.80
  4. Step 4: Simplify right side
    274,857.42x = 58,413,122,347.19
  5. Step 5: Solve for x
    x = 58,413,122,347.19/274,857.42
  6. Step 6: Final answer
    x = 212,521.54

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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.