Finding the Fourth Proportional to 229,078.40, 343,876.80 and 135,636.80
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Solution
The fourth proportional to 229,078.40, 343,876.80 and 135,636.80 is: 203,608.67
Step by Step Solution
- Step 1: Write the proportion equation
229,078.40 : 343,876.80 = 135,636.80 : x - Step 2: Convert to fraction form
229,078.40/343,876.80 = 135,636.80/x - Step 3: Cross multiply
229,078.40x = 343,876.80 × 135,636.80 - Step 4: Simplify right side
229,078.40x = 46,642,348,746.24 - Step 5: Solve for x
x = 46,642,348,746.24/229,078.40 - Step 6: Final answer
x = 203,608.67
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.