Finding the Fourth Proportional to 209,579.01, 288,578.55 and 157,971.09
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Solution
The fourth proportional to 209,579.01, 288,578.55 and 157,971.09 is: 217,517.34
Step by Step Solution
- Step 1: Write the proportion equation
209,579.01 : 288,578.55 = 157,971.09 : x - Step 2: Convert to fraction form
209,579.01/288,578.55 = 157,971.09/x - Step 3: Cross multiply
209,579.01x = 288,578.55 × 157,971.09 - Step 4: Simplify right side
209,579.01x = 45,587,068,094.12 - Step 5: Solve for x
x = 45,587,068,094.12/209,579.01 - Step 6: Final answer
x = 217,517.34
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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.