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Finding the Fourth Proportional to 308,395.89, 425,703.37 and 276,072.30

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Solution

The fourth proportional to 308,395.89, 425,703.37 and 276,072.30 is: 381,084.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,395.89 : 425,703.37 = 276,072.30 : x
  2. Step 2: Convert to fraction form
    308,395.89/425,703.37 = 276,072.30/x
  3. Step 3: Cross multiply
    308,395.89x = 425,703.37 × 276,072.30
  4. Step 4: Simplify right side
    308,395.89x = 117,524,907,330.54
  5. Step 5: Solve for x
    x = 117,524,907,330.54/308,395.89
  6. Step 6: Final answer
    x = 381,084.54

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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.