Home / 276,081.26-380,991.67-155,222.78

Finding the Fourth Proportional to 276,081.26, 380,991.67 and 155,222.78

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Solution

The fourth proportional to 276,081.26, 380,991.67 and 155,222.78 is: 214,207.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,081.26 : 380,991.67 = 155,222.78 : x
  2. Step 2: Convert to fraction form
    276,081.26/380,991.67 = 155,222.78/x
  3. Step 3: Cross multiply
    276,081.26x = 380,991.67 × 155,222.78
  4. Step 4: Simplify right side
    276,081.26x = 59,138,583,881.23
  5. Step 5: Solve for x
    x = 59,138,583,881.23/276,081.26
  6. Step 6: Final answer
    x = 214,207.17

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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.