Finding the Fourth Proportional to 215,760.65, 297,742.84 and 135,231.66
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Solution
The fourth proportional to 215,760.65, 297,742.84 and 135,231.66 is: 186,615.40
Step by Step Solution
- Step 1: Write the proportion equation
215,760.65 : 297,742.84 = 135,231.66 : x - Step 2: Convert to fraction form
215,760.65/297,742.84 = 135,231.66/x - Step 3: Cross multiply
215,760.65x = 297,742.84 × 135,231.66 - Step 4: Simplify right side
215,760.65x = 40,264,258,168.24 - Step 5: Solve for x
x = 40,264,258,168.24/215,760.65 - Step 6: Final answer
x = 186,615.40
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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.