Finding the Fourth Proportional to 213,314.28, 294,280.74 and 128,383.08
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Solution
The fourth proportional to 213,314.28, 294,280.74 and 128,383.08 is: 177,112.70
Step by Step Solution
- Step 1: Write the proportion equation
213,314.28 : 294,280.74 = 128,383.08 : x - Step 2: Convert to fraction form
213,314.28/294,280.74 = 128,383.08/x - Step 3: Cross multiply
213,314.28x = 294,280.74 × 128,383.08 - Step 4: Simplify right side
213,314.28x = 37,780,667,785.88 - Step 5: Solve for x
x = 37,780,667,785.88/213,314.28 - Step 6: Final answer
x = 177,112.70
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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.