Finding the Fourth Proportional to 213,313.28, 294,279.36 and 128,382.08
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Solution
The fourth proportional to 213,313.28, 294,279.36 and 128,382.08 is: 177,111.32
Step by Step Solution
- Step 1: Write the proportion equation
213,313.28 : 294,279.36 = 128,382.08 : x - Step 2: Convert to fraction form
213,313.28/294,279.36 = 128,382.08/x - Step 3: Cross multiply
213,313.28x = 294,279.36 × 128,382.08 - Step 4: Simplify right side
213,313.28x = 37,780,196,337.87 - Step 5: Solve for x
x = 37,780,196,337.87/213,313.28 - Step 6: Final answer
x = 177,111.32
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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.