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Finding the Fourth Proportional to 276,040, 381,224.32 and 190,222.08

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Solution

The fourth proportional to 276,040, 381,224.32 and 190,222.08 is: 262,705.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,040 : 381,224.32 = 190,222.08 : x
  2. Step 2: Convert to fraction form
    276,040/381,224.32 = 190,222.08/x
  3. Step 3: Cross multiply
    276,040x = 381,224.32 × 190,222.08
  4. Step 4: Simplify right side
    276,040x = 72,517,283,096.99
  5. Step 5: Solve for x
    x = 72,517,283,096.99/276,040
  6. Step 6: Final answer
    x = 262,705.71

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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.