Finding the Fourth Proportional to 320,986.91, 442,961.92 and 177,747.05
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Solution
The fourth proportional to 320,986.91, 442,961.92 and 177,747.05 is: 245,290.92
Step by Step Solution
- Step 1: Write the proportion equation
320,986.91 : 442,961.92 = 177,747.05 : x - Step 2: Convert to fraction form
320,986.91/442,961.92 = 177,747.05/x - Step 3: Cross multiply
320,986.91x = 442,961.92 × 177,747.05 - Step 4: Simplify right side
320,986.91x = 78,735,174,542.34 - Step 5: Solve for x
x = 78,735,174,542.34/320,986.91 - Step 6: Final answer
x = 245,290.92
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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.