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Finding the Fourth Proportional to 276,371.34, 381,361.55 and 155,510.16

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Solution

The fourth proportional to 276,371.34, 381,361.55 and 155,510.16 is: 214,586.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,371.34 : 381,361.55 = 155,510.16 : x
  2. Step 2: Convert to fraction form
    276,371.34/381,361.55 = 155,510.16/x
  3. Step 3: Cross multiply
    276,371.34x = 381,361.55 × 155,510.16
  4. Step 4: Simplify right side
    276,371.34x = 59,305,594,880.80
  5. Step 5: Solve for x
    x = 59,305,594,880.80/276,371.34
  6. Step 6: Final answer
    x = 214,586.63

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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.