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Finding the Fourth Proportional to 274,486.46, 378,791.26 and 153,627.74

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Solution

The fourth proportional to 274,486.46, 378,791.26 and 153,627.74 is: 212,006.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,486.46 : 378,791.26 = 153,627.74 : x
  2. Step 2: Convert to fraction form
    274,486.46/378,791.26 = 153,627.74/x
  3. Step 3: Cross multiply
    274,486.46x = 378,791.26 × 153,627.74
  4. Step 4: Simplify right side
    274,486.46x = 58,192,844,347.99
  5. Step 5: Solve for x
    x = 58,192,844,347.99/274,486.46
  6. Step 6: Final answer
    x = 212,006.25

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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.