Finding the Fourth Proportional to 221,173.13, 305,209.97 and 135,275.97
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Solution
The fourth proportional to 221,173.13, 305,209.97 and 135,275.97 is: 186,675.37
Step by Step Solution
- Step 1: Write the proportion equation
221,173.13 : 305,209.97 = 135,275.97 : x - Step 2: Convert to fraction form
221,173.13/305,209.97 = 135,275.97/x - Step 3: Cross multiply
221,173.13x = 305,209.97 × 135,275.97 - Step 4: Simplify right side
221,173.13x = 41,287,576,481.79 - Step 5: Solve for x
x = 41,287,576,481.79/221,173.13 - Step 6: Final answer
x = 186,675.37
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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.