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Finding the Fourth Proportional to 271,258.40, 406,887.60 and 131,031.20

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Solution

The fourth proportional to 271,258.40, 406,887.60 and 131,031.20 is: 196,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,258.40 : 406,887.60 = 131,031.20 : x
  2. Step 2: Convert to fraction form
    271,258.40/406,887.60 = 131,031.20/x
  3. Step 3: Cross multiply
    271,258.40x = 406,887.60 × 131,031.20
  4. Step 4: Simplify right side
    271,258.40x = 53,314,970,493.12
  5. Step 5: Solve for x
    x = 53,314,970,493.12/271,258.40
  6. Step 6: Final answer
    x = 196,546.80

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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.