Home / 276,640.06-381,759.50-155,782.80

Finding the Fourth Proportional to 276,640.06, 381,759.50 and 155,782.80

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Solution

The fourth proportional to 276,640.06, 381,759.50 and 155,782.80 is: 214,978.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,640.06 : 381,759.50 = 155,782.80 : x
  2. Step 2: Convert to fraction form
    276,640.06/381,759.50 = 155,782.80/x
  3. Step 3: Cross multiply
    276,640.06x = 381,759.50 × 155,782.80
  4. Step 4: Simplify right side
    276,640.06x = 59,471,563,836.60
  5. Step 5: Solve for x
    x = 59,471,563,836.60/276,640.06
  6. Step 6: Final answer
    x = 214,978.13

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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.