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Finding the Fourth Proportional to 306,297.74, 422,628.93 and 178,948.73

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Solution

The fourth proportional to 306,297.74, 422,628.93 and 178,948.73 is: 246,913.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,297.74 : 422,628.93 = 178,948.73 : x
  2. Step 2: Convert to fraction form
    306,297.74/422,628.93 = 178,948.73/x
  3. Step 3: Cross multiply
    306,297.74x = 422,628.93 × 178,948.73
  4. Step 4: Simplify right side
    306,297.74x = 75,628,908,171.61
  5. Step 5: Solve for x
    x = 75,628,908,171.61/306,297.74
  6. Step 6: Final answer
    x = 246,913.05

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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.