Finding the Fourth Proportional to 207,718.40, 311,577.60 and 74,619.20
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Solution
The fourth proportional to 207,718.40, 311,577.60 and 74,619.20 is: 111,928.80
Step by Step Solution
- Step 1: Write the proportion equation
207,718.40 : 311,577.60 = 74,619.20 : x - Step 2: Convert to fraction form
207,718.40/311,577.60 = 74,619.20/x - Step 3: Cross multiply
207,718.40x = 311,577.60 × 74,619.20 - Step 4: Simplify right side
207,718.40x = 23,249,671,249.92 - Step 5: Solve for x
x = 23,249,671,249.92/207,718.40 - Step 6: Final answer
x = 111,928.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.