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Finding the Fourth Proportional to 203,915.70, 305,873.55 and 119,716.20

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Solution

The fourth proportional to 203,915.70, 305,873.55 and 119,716.20 is: 179,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,915.70 : 305,873.55 = 119,716.20 : x
  2. Step 2: Convert to fraction form
    203,915.70/305,873.55 = 119,716.20/x
  3. Step 3: Cross multiply
    203,915.70x = 305,873.55 × 119,716.20
  4. Step 4: Simplify right side
    203,915.70x = 36,618,019,086.51
  5. Step 5: Solve for x
    x = 36,618,019,086.51/203,915.70
  6. Step 6: Final answer
    x = 179,574.30

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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.