Finding the Fourth Proportional to 311,221.91, 428,969.93 and 220,461.41
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Solution
The fourth proportional to 311,221.91, 428,969.93 and 220,461.41 is: 303,871.00
Step by Step Solution
- Step 1: Write the proportion equation
311,221.91 : 428,969.93 = 220,461.41 : x - Step 2: Convert to fraction form
311,221.91/428,969.93 = 220,461.41/x - Step 3: Cross multiply
311,221.91x = 428,969.93 × 220,461.41 - Step 4: Simplify right side
311,221.91x = 94,571,312,368.24 - Step 5: Solve for x
x = 94,571,312,368.24/311,221.91 - Step 6: Final answer
x = 303,871.00
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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.