Finding the Fourth Proportional to 215,397.36, 296,844.21 and 154,863.09
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Solution
The fourth proportional to 215,397.36, 296,844.21 and 154,863.09 is: 213,420.50
Step by Step Solution
- Step 1: Write the proportion equation
215,397.36 : 296,844.21 = 154,863.09 : x - Step 2: Convert to fraction form
215,397.36/296,844.21 = 154,863.09/x - Step 3: Cross multiply
215,397.36x = 296,844.21 × 154,863.09 - Step 4: Simplify right side
215,397.36x = 45,970,211,609.21 - Step 5: Solve for x
x = 45,970,211,609.21/215,397.36 - Step 6: Final answer
x = 213,420.50
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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.