Finding the Fourth Proportional to 268,212.80, 402,578.40 and 135,243.20
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Solution
The fourth proportional to 268,212.80, 402,578.40 and 135,243.20 is: 202,995.50
Step by Step Solution
- Step 1: Write the proportion equation
268,212.80 : 402,578.40 = 135,243.20 : x - Step 2: Convert to fraction form
268,212.80/402,578.40 = 135,243.20/x - Step 3: Cross multiply
268,212.80x = 402,578.40 × 135,243.20 - Step 4: Simplify right side
268,212.80x = 54,445,991,066.88 - Step 5: Solve for x
x = 54,445,991,066.88/268,212.80 - Step 6: Final answer
x = 202,995.50
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1.5x scale
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.