Finding the Fourth Proportional to 154,163.20, 216,243.20 and 154,163.20
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Solution
The fourth proportional to 154,163.20, 216,243.20 and 154,163.20 is: 216,243.20
Step by Step Solution
- Step 1: Write the proportion equation
154,163.20 : 216,243.20 = 154,163.20 : x - Step 2: Convert to fraction form
154,163.20/216,243.20 = 154,163.20/x - Step 3: Cross multiply
154,163.20x = 216,243.20 × 154,163.20 - Step 4: Simplify right side
154,163.20x = 33,336,743,690.24 - Step 5: Solve for x
x = 33,336,743,690.24/154,163.20 - Step 6: Final answer
x = 216,243.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.