Home / 276,371.91-381,394.89-155,515.23

Finding the Fourth Proportional to 276,371.91, 381,394.89 and 155,515.23

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Solution

The fourth proportional to 276,371.91, 381,394.89 and 155,515.23 is: 214,611.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,371.91 : 381,394.89 = 155,515.23 : x
  2. Step 2: Convert to fraction form
    276,371.91/381,394.89 = 155,515.23/x
  3. Step 3: Cross multiply
    276,371.91x = 381,394.89 × 155,515.23
  4. Step 4: Simplify right side
    276,371.91x = 59,312,714,039.17
  5. Step 5: Solve for x
    x = 59,312,714,039.17/276,371.91
  6. Step 6: Final answer
    x = 214,611.95

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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.