Home / 206,109.40-309,164.10-185,770.30

Finding the Fourth Proportional to 206,109.40, 309,164.10 and 185,770.30

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Solution

The fourth proportional to 206,109.40, 309,164.10 and 185,770.30 is: 278,655.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,109.40 : 309,164.10 = 185,770.30 : x
  2. Step 2: Convert to fraction form
    206,109.40/309,164.10 = 185,770.30/x
  3. Step 3: Cross multiply
    206,109.40x = 309,164.10 × 185,770.30
  4. Step 4: Simplify right side
    206,109.40x = 57,433,507,606.23
  5. Step 5: Solve for x
    x = 57,433,507,606.23/206,109.40
  6. Step 6: Final answer
    x = 278,655.45

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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.