Finding the Fourth Proportional to 212,768.80, 318,904.08 and 136,770.40
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Solution
The fourth proportional to 212,768.80, 318,904.08 and 136,770.40 is: 204,995.46
Step by Step Solution
- Step 1: Write the proportion equation
212,768.80 : 318,904.08 = 136,770.40 : x - Step 2: Convert to fraction form
212,768.80/318,904.08 = 136,770.40/x - Step 3: Cross multiply
212,768.80x = 318,904.08 × 136,770.40 - Step 4: Simplify right side
212,768.80x = 43,616,638,583.23 - Step 5: Solve for x
x = 43,616,638,583.23/212,768.80 - Step 6: Final answer
x = 204,995.46
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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.