Finding the Fourth Proportional to 209,166.30, 288,529.29 and 128,536.47
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Solution
The fourth proportional to 209,166.30, 288,529.29 and 128,536.47 is: 177,306.46
Step by Step Solution
- Step 1: Write the proportion equation
209,166.30 : 288,529.29 = 128,536.47 : x - Step 2: Convert to fraction form
209,166.30/288,529.29 = 128,536.47/x - Step 3: Cross multiply
209,166.30x = 288,529.29 × 128,536.47 - Step 4: Simplify right side
209,166.30x = 37,086,536,428.21 - Step 5: Solve for x
x = 37,086,536,428.21/209,166.30 - Step 6: Final answer
x = 177,306.46
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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.