Finding the Fourth Proportional to 256,879.34, 354,492.98 and 143,702.09
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Solution
The fourth proportional to 256,879.34, 354,492.98 and 143,702.09 is: 198,308.60
Step by Step Solution
- Step 1: Write the proportion equation
256,879.34 : 354,492.98 = 143,702.09 : x - Step 2: Convert to fraction form
256,879.34/354,492.98 = 143,702.09/x - Step 3: Cross multiply
256,879.34x = 354,492.98 × 143,702.09 - Step 4: Simplify right side
256,879.34x = 50,941,382,116.33 - Step 5: Solve for x
x = 50,941,382,116.33/256,879.34 - Step 6: Final answer
x = 198,308.60
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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.