Home / 276,220.56-381,180.60-155,361.81

Finding the Fourth Proportional to 276,220.56, 381,180.60 and 155,361.81

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Solution

The fourth proportional to 276,220.56, 381,180.60 and 155,361.81 is: 214,397.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,220.56 : 381,180.60 = 155,361.81 : x
  2. Step 2: Convert to fraction form
    276,220.56/381,180.60 = 155,361.81/x
  3. Step 3: Cross multiply
    276,220.56x = 381,180.60 × 155,361.81
  4. Step 4: Simplify right side
    276,220.56x = 59,220,907,952.89
  5. Step 5: Solve for x
    x = 59,220,907,952.89/276,220.56
  6. Step 6: Final answer
    x = 214,397.18

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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.