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Finding the Fourth Proportional to 274,308.58, 409,640.14 and 271,339.72

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Solution

The fourth proportional to 274,308.58, 409,640.14 and 271,339.72 is: 405,206.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,308.58 : 409,640.14 = 271,339.72 : x
  2. Step 2: Convert to fraction form
    274,308.58/409,640.14 = 271,339.72/x
  3. Step 3: Cross multiply
    274,308.58x = 409,640.14 × 271,339.72
  4. Step 4: Simplify right side
    274,308.58x = 111,151,640,981.38
  5. Step 5: Solve for x
    x = 111,151,640,981.38/274,308.58
  6. Step 6: Final answer
    x = 405,206.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.