Finding the Fourth Proportional to 209,973.42, 289,768.80 and 129,454.14
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Solution
The fourth proportional to 209,973.42, 289,768.80 and 129,454.14 is: 178,650.09
Step by Step Solution
- Step 1: Write the proportion equation
209,973.42 : 289,768.80 = 129,454.14 : x - Step 2: Convert to fraction form
209,973.42/289,768.80 = 129,454.14/x - Step 3: Cross multiply
209,973.42x = 289,768.80 × 129,454.14 - Step 4: Simplify right side
209,973.42x = 37,511,770,802.83 - Step 5: Solve for x
x = 37,511,770,802.83/209,973.42 - Step 6: Final answer
x = 178,650.09
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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.