Home / 276,636.50-381,754.61-155,779.23

Finding the Fourth Proportional to 276,636.50, 381,754.61 and 155,779.23

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Solution

The fourth proportional to 276,636.50, 381,754.61 and 155,779.23 is: 214,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,636.50 : 381,754.61 = 155,779.23 : x
  2. Step 2: Convert to fraction form
    276,636.50/381,754.61 = 155,779.23/x
  3. Step 3: Cross multiply
    276,636.50x = 381,754.61 × 155,779.23
  4. Step 4: Simplify right side
    276,636.50x = 59,469,439,194.75
  5. Step 5: Solve for x
    x = 59,469,439,194.75/276,636.50
  6. Step 6: Final answer
    x = 214,973.22

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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.