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Finding the Fourth Proportional to 206,610.60, 309,915.90 and 73,495.20

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Solution

The fourth proportional to 206,610.60, 309,915.90 and 73,495.20 is: 110,242.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,610.60 : 309,915.90 = 73,495.20 : x
  2. Step 2: Convert to fraction form
    206,610.60/309,915.90 = 73,495.20/x
  3. Step 3: Cross multiply
    206,610.60x = 309,915.90 × 73,495.20
  4. Step 4: Simplify right side
    206,610.60x = 22,777,331,053.68
  5. Step 5: Solve for x
    x = 22,777,331,053.68/206,610.60
  6. Step 6: Final answer
    x = 110,242.80

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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.