Finding the Fourth Proportional to 218,716.20, 307,135.80 and 218,716.20
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Solution
The fourth proportional to 218,716.20, 307,135.80 and 218,716.20 is: 307,135.80
Step by Step Solution
- Step 1: Write the proportion equation
218,716.20 : 307,135.80 = 218,716.20 : x - Step 2: Convert to fraction form
218,716.20/307,135.80 = 218,716.20/x - Step 3: Cross multiply
218,716.20x = 307,135.80 × 218,716.20 - Step 4: Simplify right side
218,716.20x = 67,175,575,059.96 - Step 5: Solve for x
x = 67,175,575,059.96/218,716.20 - Step 6: Final answer
x = 307,135.80
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.