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Finding the Fourth Proportional to 206,005.20, 308,716.20 and 180,927.60

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Solution

The fourth proportional to 206,005.20, 308,716.20 and 180,927.60 is: 271,135.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,005.20 : 308,716.20 = 180,927.60 : x
  2. Step 2: Convert to fraction form
    206,005.20/308,716.20 = 180,927.60/x
  3. Step 3: Cross multiply
    206,005.20x = 308,716.20 × 180,927.60
  4. Step 4: Simplify right side
    206,005.20x = 55,855,281,147.12
  5. Step 5: Solve for x
    x = 55,855,281,147.12/206,005.20
  6. Step 6: Final answer
    x = 271,135.30

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1.5x scale

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.