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Finding the Fourth Proportional to 309,593.99, 427,286.40 and 188,805.34

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Solution

The fourth proportional to 309,593.99, 427,286.40 and 188,805.34 is: 260,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,593.99 : 427,286.40 = 188,805.34 : x
  2. Step 2: Convert to fraction form
    309,593.99/427,286.40 = 188,805.34/x
  3. Step 3: Cross multiply
    309,593.99x = 427,286.40 × 188,805.34
  4. Step 4: Simplify right side
    309,593.99x = 80,673,954,029.38
  5. Step 5: Solve for x
    x = 80,673,954,029.38/309,593.99
  6. Step 6: Final answer
    x = 260,579.85

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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.