Home / 254,715.60-381,847.41-128,190.36

Finding the Fourth Proportional to 254,715.60, 381,847.41 and 128,190.36

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Solution

The fourth proportional to 254,715.60, 381,847.41 and 128,190.36 is: 192,171.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,715.60 : 381,847.41 = 128,190.36 : x
  2. Step 2: Convert to fraction form
    254,715.60/381,847.41 = 128,190.36/x
  3. Step 3: Cross multiply
    254,715.60x = 381,847.41 × 128,190.36
  4. Step 4: Simplify right side
    254,715.60x = 48,949,156,952.97
  5. Step 5: Solve for x
    x = 48,949,156,952.97/254,715.60
  6. Step 6: Final answer
    x = 192,171.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.