Finding the Fourth Proportional to 281,329.91, 388,235.93 and 154,013.70
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Solution
The fourth proportional to 281,329.91, 388,235.93 and 154,013.70 is: 212,539.26
Step by Step Solution
- Step 1: Write the proportion equation
281,329.91 : 388,235.93 = 154,013.70 : x - Step 2: Convert to fraction form
281,329.91/388,235.93 = 154,013.70/x - Step 3: Cross multiply
281,329.91x = 388,235.93 × 154,013.70 - Step 4: Simplify right side
281,329.91x = 59,793,652,052.24 - Step 5: Solve for x
x = 59,793,652,052.24/281,329.91 - Step 6: Final answer
x = 212,539.26
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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.