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Finding the Fourth Proportional to 206,000.20, 309,000.30 and 127,268.20

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Solution

The fourth proportional to 206,000.20, 309,000.30 and 127,268.20 is: 190,902.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,000.20 : 309,000.30 = 127,268.20 : x
  2. Step 2: Convert to fraction form
    206,000.20/309,000.30 = 127,268.20/x
  3. Step 3: Cross multiply
    206,000.20x = 309,000.30 × 127,268.20
  4. Step 4: Simplify right side
    206,000.20x = 39,325,911,980.46
  5. Step 5: Solve for x
    x = 39,325,911,980.46/206,000.20
  6. Step 6: Final answer
    x = 190,902.30

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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.