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Finding the Fourth Proportional to 306,359.58, 422,981.66 and 273,993.60

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Solution

The fourth proportional to 306,359.58, 422,981.66 and 273,993.60 is: 378,294.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,359.58 : 422,981.66 = 273,993.60 : x
  2. Step 2: Convert to fraction form
    306,359.58/422,981.66 = 273,993.60/x
  3. Step 3: Cross multiply
    306,359.58x = 422,981.66 × 273,993.60
  4. Step 4: Simplify right side
    306,359.58x = 115,894,267,757.38
  5. Step 5: Solve for x
    x = 115,894,267,757.38/306,359.58
  6. Step 6: Final answer
    x = 378,294.90

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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.