Finding the Fourth Proportional to 320,859.24, 442,785.86 and 177,619.30
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Solution
The fourth proportional to 320,859.24, 442,785.86 and 177,619.30 is: 245,114.69
Step by Step Solution
- Step 1: Write the proportion equation
320,859.24 : 442,785.86 = 177,619.30 : x - Step 2: Convert to fraction form
320,859.24/442,785.86 = 177,619.30/x - Step 3: Cross multiply
320,859.24x = 442,785.86 × 177,619.30 - Step 4: Simplify right side
320,859.24x = 78,647,314,503.10 - Step 5: Solve for x
x = 78,647,314,503.10/320,859.24 - Step 6: Final answer
x = 245,114.69
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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.