Finding the Fourth Proportional to 281,342.16, 388,252.19 and 154,017.75
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Solution
The fourth proportional to 281,342.16, 388,252.19 and 154,017.75 is: 212,544.50
Step by Step Solution
- Step 1: Write the proportion equation
281,342.16 : 388,252.19 = 154,017.75 : x - Step 2: Convert to fraction form
281,342.16/388,252.19 = 154,017.75/x - Step 3: Cross multiply
281,342.16x = 388,252.19 × 154,017.75 - Step 4: Simplify right side
281,342.16x = 59,797,727,966.28 - Step 5: Solve for x
x = 59,797,727,966.28/281,342.16 - Step 6: Final answer
x = 212,544.50
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1.5x scale
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.