Finding the Fourth Proportional to 225,485.68, 311,092.98 and 128,619.94
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Solution
The fourth proportional to 225,485.68, 311,092.98 and 128,619.94 is: 177,451.45
Step by Step Solution
- Step 1: Write the proportion equation
225,485.68 : 311,092.98 = 128,619.94 : x - Step 2: Convert to fraction form
225,485.68/311,092.98 = 128,619.94/x - Step 3: Cross multiply
225,485.68x = 311,092.98 × 128,619.94 - Step 4: Simplify right side
225,485.68x = 40,012,760,422.02 - Step 5: Solve for x
x = 40,012,760,422.02/225,485.68 - Step 6: Final answer
x = 177,451.45
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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.