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Finding the Fourth Proportional to 206,025.02, 308,622 and 172,651.40

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Solution

The fourth proportional to 206,025.02, 308,622 and 172,651.40 is: 258,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,025.02 : 308,622 = 172,651.40 : x
  2. Step 2: Convert to fraction form
    206,025.02/308,622 = 172,651.40/x
  3. Step 3: Cross multiply
    206,025.02x = 308,622 × 172,651.40
  4. Step 4: Simplify right side
    206,025.02x = 53,284,020,370.80
  5. Step 5: Solve for x
    x = 53,284,020,370.80/206,025.02
  6. Step 6: Final answer
    x = 258,628.88

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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.