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Finding the Fourth Proportional to 206,044.40, 308,836.20 and 87,695.60

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Solution

The fourth proportional to 206,044.40, 308,836.20 and 87,695.60 is: 131,445.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,044.40 : 308,836.20 = 87,695.60 : x
  2. Step 2: Convert to fraction form
    206,044.40/308,836.20 = 87,695.60/x
  3. Step 3: Cross multiply
    206,044.40x = 308,836.20 × 87,695.60
  4. Step 4: Simplify right side
    206,044.40x = 27,083,575,860.72
  5. Step 5: Solve for x
    x = 27,083,575,860.72/206,044.40
  6. Step 6: Final answer
    x = 131,445.34

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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.