Finding the Fourth Proportional to 287,838.36, 397,326.36 and 216,425.76
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Solution
The fourth proportional to 287,838.36, 397,326.36 and 216,425.76 is: 298,749.82
Step by Step Solution
- Step 1: Write the proportion equation
287,838.36 : 397,326.36 = 216,425.76 : x - Step 2: Convert to fraction form
287,838.36/397,326.36 = 216,425.76/x - Step 3: Cross multiply
287,838.36x = 397,326.36 × 216,425.76 - Step 4: Simplify right side
287,838.36x = 85,991,659,431.03 - Step 5: Solve for x
x = 85,991,659,431.03/287,838.36 - Step 6: Final answer
x = 298,749.82
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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.