Finding the Fourth Proportional to 215,117.10, 322,566.30 and 126,397.80
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Solution
The fourth proportional to 215,117.10, 322,566.30 and 126,397.80 is: 189,532.45
Step by Step Solution
- Step 1: Write the proportion equation
215,117.10 : 322,566.30 = 126,397.80 : x - Step 2: Convert to fraction form
215,117.10/322,566.30 = 126,397.80/x - Step 3: Cross multiply
215,117.10x = 322,566.30 × 126,397.80 - Step 4: Simplify right side
215,117.10x = 40,771,670,674.14 - Step 5: Solve for x
x = 40,771,670,674.14/215,117.10 - Step 6: Final answer
x = 189,532.45
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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.