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Finding the Fourth Proportional to 306,296.60, 422,627.38 and 178,947.59

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Solution

The fourth proportional to 306,296.60, 422,627.38 and 178,947.59 is: 246,911.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,296.60 : 422,627.38 = 178,947.59 : x
  2. Step 2: Convert to fraction form
    306,296.60/422,627.38 = 178,947.59/x
  3. Step 3: Cross multiply
    306,296.60x = 422,627.38 × 178,947.59
  4. Step 4: Simplify right side
    306,296.60x = 75,628,151,728.21
  5. Step 5: Solve for x
    x = 75,628,151,728.21/306,296.60
  6. Step 6: Final answer
    x = 246,911.49

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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.