Finding the Fourth Proportional to 422,128.19, 582,537.86 and 228,537.94
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Solution
The fourth proportional to 422,128.19, 582,537.86 and 228,537.94 is: 315,382.87
Step by Step Solution
- Step 1: Write the proportion equation
422,128.19 : 582,537.86 = 228,537.94 : x - Step 2: Convert to fraction form
422,128.19/582,537.86 = 228,537.94/x - Step 3: Cross multiply
422,128.19x = 582,537.86 × 228,537.94 - Step 4: Simplify right side
422,128.19x = 133,131,998,441.03 - Step 5: Solve for x
x = 133,131,998,441.03/422,128.19 - Step 6: Final answer
x = 315,382.87
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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.