Finding the Fourth Proportional to 281,326.68, 388,216.26 and 153,978.12
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Solution
The fourth proportional to 281,326.68, 388,216.26 and 153,978.12 is: 212,481.84
Step by Step Solution
- Step 1: Write the proportion equation
281,326.68 : 388,216.26 = 153,978.12 : x - Step 2: Convert to fraction form
281,326.68/388,216.26 = 153,978.12/x - Step 3: Cross multiply
281,326.68x = 388,216.26 × 153,978.12 - Step 4: Simplify right side
281,326.68x = 59,776,809,868.23 - Step 5: Solve for x
x = 59,776,809,868.23/281,326.68 - Step 6: Final answer
x = 212,481.84
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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.