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Finding the Fourth Proportional to 306,993.51, 423,662.76 and 177,936.21

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Solution

The fourth proportional to 306,993.51, 423,662.76 and 177,936.21 is: 245,558.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,993.51 : 423,662.76 = 177,936.21 : x
  2. Step 2: Convert to fraction form
    306,993.51/423,662.76 = 177,936.21/x
  3. Step 3: Cross multiply
    306,993.51x = 423,662.76 × 177,936.21
  4. Step 4: Simplify right side
    306,993.51x = 75,384,945,832.54
  5. Step 5: Solve for x
    x = 75,384,945,832.54/306,993.51
  6. Step 6: Final answer
    x = 245,558.76

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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.