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Finding the Fourth Proportional to 231,855.30, 347,892.30 and 172,806.30

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Solution

The fourth proportional to 231,855.30, 347,892.30 and 172,806.30 is: 259,290.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,855.30 : 347,892.30 = 172,806.30 : x
  2. Step 2: Convert to fraction form
    231,855.30/347,892.30 = 172,806.30/x
  3. Step 3: Cross multiply
    231,855.30x = 347,892.30 × 172,806.30
  4. Step 4: Simplify right side
    231,855.30x = 60,117,981,161.49
  5. Step 5: Solve for x
    x = 60,117,981,161.49/231,855.30
  6. Step 6: Final answer
    x = 259,290.95

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1.5x scale

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.