Finding the Fourth Proportional to 281,701.19, 388,747.98 and 152,639.56
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Solution
The fourth proportional to 281,701.19, 388,747.98 and 152,639.56 is: 210,642.78
Step by Step Solution
- Step 1: Write the proportion equation
281,701.19 : 388,747.98 = 152,639.56 : x - Step 2: Convert to fraction form
281,701.19/388,747.98 = 152,639.56/x - Step 3: Cross multiply
281,701.19x = 388,747.98 × 152,639.56 - Step 4: Simplify right side
281,701.19x = 59,338,320,618.09 - Step 5: Solve for x
x = 59,338,320,618.09/281,701.19 - Step 6: Final answer
x = 210,642.78
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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.