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Finding the Fourth Proportional to 206,246.40, 309,369.60 and 181,314.60

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Solution

The fourth proportional to 206,246.40, 309,369.60 and 181,314.60 is: 271,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,246.40 : 309,369.60 = 181,314.60 : x
  2. Step 2: Convert to fraction form
    206,246.40/309,369.60 = 181,314.60/x
  3. Step 3: Cross multiply
    206,246.40x = 309,369.60 × 181,314.60
  4. Step 4: Simplify right side
    206,246.40x = 56,093,225,276.16
  5. Step 5: Solve for x
    x = 56,093,225,276.16/206,246.40
  6. Step 6: Final answer
    x = 271,971.90

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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.