Finding the Fourth Proportional to 306,613.13, 422,764.11 and 209,863.58
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Solution
The fourth proportional to 306,613.13, 422,764.11 and 209,863.58 is: 289,363.96
Step by Step Solution
- Step 1: Write the proportion equation
306,613.13 : 422,764.11 = 209,863.58 : x - Step 2: Convert to fraction form
306,613.13/422,764.11 = 209,863.58/x - Step 3: Cross multiply
306,613.13x = 422,764.11 × 209,863.58 - Step 4: Simplify right side
306,613.13x = 88,722,787,506.29 - Step 5: Solve for x
x = 88,722,787,506.29/306,613.13 - Step 6: Final answer
x = 289,363.96
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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.