Finding the Fourth Proportional to 209,201.09, 288,699.26 and 113,707.76
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Solution
The fourth proportional to 209,201.09, 288,699.26 and 113,707.76 is: 156,917.66
Step by Step Solution
- Step 1: Write the proportion equation
209,201.09 : 288,699.26 = 113,707.76 : x - Step 2: Convert to fraction form
209,201.09/288,699.26 = 113,707.76/x - Step 3: Cross multiply
209,201.09x = 288,699.26 × 113,707.76 - Step 4: Simplify right side
209,201.09x = 32,827,344,156.22 - Step 5: Solve for x
x = 32,827,344,156.22/209,201.09 - Step 6: Final answer
x = 156,917.66
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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.