Finding the Fourth Proportional to 281,185.84, 388,042.74 and 153,861.40
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Solution
The fourth proportional to 281,185.84, 388,042.74 and 153,861.40 is: 212,332.17
Step by Step Solution
- Step 1: Write the proportion equation
281,185.84 : 388,042.74 = 153,861.40 : x - Step 2: Convert to fraction form
281,185.84/388,042.74 = 153,861.40/x - Step 3: Cross multiply
281,185.84x = 388,042.74 × 153,861.40 - Step 4: Simplify right side
281,185.84x = 59,704,799,236.24 - Step 5: Solve for x
x = 59,704,799,236.24/281,185.84 - Step 6: Final answer
x = 212,332.17
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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.