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Finding the Fourth Proportional to 206,812.10, 289,930.60 and 206,812.10

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Solution

The fourth proportional to 206,812.10, 289,930.60 and 206,812.10 is: 289,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,812.10 : 289,930.60 = 206,812.10 : x
  2. Step 2: Convert to fraction form
    206,812.10/289,930.60 = 206,812.10/x
  3. Step 3: Cross multiply
    206,812.10x = 289,930.60 × 206,812.10
  4. Step 4: Simplify right side
    206,812.10x = 59,961,156,240.26
  5. Step 5: Solve for x
    x = 59,961,156,240.26/206,812.10
  6. Step 6: Final answer
    x = 289,930.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.