Home / 256,268.41-384,439.37-78,790.32

Finding the Fourth Proportional to 256,268.41, 384,439.37 and 78,790.32

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Solution

The fourth proportional to 256,268.41, 384,439.37 and 78,790.32 is: 118,196.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,268.41 : 384,439.37 = 78,790.32 : x
  2. Step 2: Convert to fraction form
    256,268.41/384,439.37 = 78,790.32/x
  3. Step 3: Cross multiply
    256,268.41x = 384,439.37 × 78,790.32
  4. Step 4: Simplify right side
    256,268.41x = 30,290,100,588.95
  5. Step 5: Solve for x
    x = 30,290,100,588.95/256,268.41
  6. Step 6: Final answer
    x = 118,196.78

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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.