Home / 289,057.38-399,015.09-190,926.42

Finding the Fourth Proportional to 289,057.38, 399,015.09 and 190,926.42

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Solution

The fourth proportional to 289,057.38, 399,015.09 and 190,926.42 is: 263,555.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,057.38 : 399,015.09 = 190,926.42 : x
  2. Step 2: Convert to fraction form
    289,057.38/399,015.09 = 190,926.42/x
  3. Step 3: Cross multiply
    289,057.38x = 399,015.09 × 190,926.42
  4. Step 4: Simplify right side
    289,057.38x = 76,182,522,659.68
  5. Step 5: Solve for x
    x = 76,182,522,659.68/289,057.38
  6. Step 6: Final answer
    x = 263,555.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.