Finding the Fourth Proportional to 213,114.92, 294,125.70 and 128,277.80
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Solution
The fourth proportional to 213,114.92, 294,125.70 and 128,277.80 is: 177,039.68
Step by Step Solution
- Step 1: Write the proportion equation
213,114.92 : 294,125.70 = 128,277.80 : x - Step 2: Convert to fraction form
213,114.92/294,125.70 = 128,277.80/x - Step 3: Cross multiply
213,114.92x = 294,125.70 × 128,277.80 - Step 4: Simplify right side
213,114.92x = 37,729,797,719.46 - Step 5: Solve for x
x = 37,729,797,719.46/213,114.92 - Step 6: Final answer
x = 177,039.68
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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.