Finding the Fourth Proportional to 320,982.11, 442,949.84 and 177,739.07
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Solution
The fourth proportional to 320,982.11, 442,949.84 and 177,739.07 is: 245,276.88
Step by Step Solution
- Step 1: Write the proportion equation
320,982.11 : 442,949.84 = 177,739.07 : x - Step 2: Convert to fraction form
320,982.11/442,949.84 = 177,739.07/x - Step 3: Cross multiply
320,982.11x = 442,949.84 × 177,739.07 - Step 4: Simplify right side
320,982.11x = 78,729,489,514.80 - Step 5: Solve for x
x = 78,729,489,514.80/320,982.11 - Step 6: Final answer
x = 245,276.88
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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.