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Finding the Fourth Proportional to 271,133.64, 374,078.88 and 156,396.86

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Solution

The fourth proportional to 271,133.64, 374,078.88 and 156,396.86 is: 215,778.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,133.64 : 374,078.88 = 156,396.86 : x
  2. Step 2: Convert to fraction form
    271,133.64/374,078.88 = 156,396.86/x
  3. Step 3: Cross multiply
    271,133.64x = 374,078.88 × 156,396.86
  4. Step 4: Simplify right side
    271,133.64x = 58,504,762,224.32
  5. Step 5: Solve for x
    x = 58,504,762,224.32/271,133.64
  6. Step 6: Final answer
    x = 215,778.32

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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.