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Finding the Fourth Proportional to 206,610.60, 309,324.60 and 127,190.10

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Solution

The fourth proportional to 206,610.60, 309,324.60 and 127,190.10 is: 190,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,610.60 : 309,324.60 = 127,190.10 : x
  2. Step 2: Convert to fraction form
    206,610.60/309,324.60 = 127,190.10/x
  3. Step 3: Cross multiply
    206,610.60x = 309,324.60 × 127,190.10
  4. Step 4: Simplify right side
    206,610.60x = 39,343,026,806.46
  5. Step 5: Solve for x
    x = 39,343,026,806.46/206,610.60
  6. Step 6: Final answer
    x = 190,421.14

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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.