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Finding the Fourth Proportional to 271,165.31, 406,218.52 and 128,808.01

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Solution

The fourth proportional to 271,165.31, 406,218.52 and 128,808.01 is: 192,960.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,165.31 : 406,218.52 = 128,808.01 : x
  2. Step 2: Convert to fraction form
    271,165.31/406,218.52 = 128,808.01/x
  3. Step 3: Cross multiply
    271,165.31x = 406,218.52 × 128,808.01
  4. Step 4: Simplify right side
    271,165.31x = 52,324,199,186.35
  5. Step 5: Solve for x
    x = 52,324,199,186.35/271,165.31
  6. Step 6: Final answer
    x = 192,960.52

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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.