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Finding the Fourth Proportional to 271,663.40, 407,640.90 and 113,907.80

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Solution

The fourth proportional to 271,663.40, 407,640.90 and 113,907.80 is: 170,922.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,663.40 : 407,640.90 = 113,907.80 : x
  2. Step 2: Convert to fraction form
    271,663.40/407,640.90 = 113,907.80/x
  3. Step 3: Cross multiply
    271,663.40x = 407,640.90 × 113,907.80
  4. Step 4: Simplify right side
    271,663.40x = 46,433,478,109.02
  5. Step 5: Solve for x
    x = 46,433,478,109.02/271,663.40
  6. Step 6: Final answer
    x = 170,922.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.