Finding the Fourth Proportional to 320,982.13, 442,949.88 and 177,739.09
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Solution
The fourth proportional to 320,982.13, 442,949.88 and 177,739.09 is: 245,276.92
Step by Step Solution
- Step 1: Write the proportion equation
320,982.13 : 442,949.88 = 177,739.09 : x - Step 2: Convert to fraction form
320,982.13/442,949.88 = 177,739.09/x - Step 3: Cross multiply
320,982.13x = 442,949.88 × 177,739.09 - Step 4: Simplify right side
320,982.13x = 78,729,508,586.81 - Step 5: Solve for x
x = 78,729,508,586.81/320,982.13 - Step 6: Final answer
x = 245,276.92
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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.