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Finding the Fourth Proportional to 306,299.82, 422,631.81 and 178,950.81

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Solution

The fourth proportional to 306,299.82, 422,631.81 and 178,950.81 is: 246,915.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,299.82 : 422,631.81 = 178,950.81 : x
  2. Step 2: Convert to fraction form
    306,299.82/422,631.81 = 178,950.81/x
  3. Step 3: Cross multiply
    306,299.82x = 422,631.81 × 178,950.81
  4. Step 4: Simplify right side
    306,299.82x = 75,630,304,731.27
  5. Step 5: Solve for x
    x = 75,630,304,731.27/306,299.82
  6. Step 6: Final answer
    x = 246,915.93

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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.