Finding the Fourth Proportional to 320,982.09, 442,949.85 and 177,739.07
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Solution
The fourth proportional to 320,982.09, 442,949.85 and 177,739.07 is: 245,276.90
Step by Step Solution
- Step 1: Write the proportion equation
320,982.09 : 442,949.85 = 177,739.07 : x - Step 2: Convert to fraction form
320,982.09/442,949.85 = 177,739.07/x - Step 3: Cross multiply
320,982.09x = 442,949.85 × 177,739.07 - Step 4: Simplify right side
320,982.09x = 78,729,492,180.89 - Step 5: Solve for x
x = 78,729,492,180.89/320,982.09 - Step 6: Final answer
x = 245,276.90
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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.