Finding the Fourth Proportional to 201,728.80, 302,593.20 and 138,743.20
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Solution
The fourth proportional to 201,728.80, 302,593.20 and 138,743.20 is: 208,114.80
Step by Step Solution
- Step 1: Write the proportion equation
201,728.80 : 302,593.20 = 138,743.20 : x - Step 2: Convert to fraction form
201,728.80/302,593.20 = 138,743.20/x - Step 3: Cross multiply
201,728.80x = 302,593.20 × 138,743.20 - Step 4: Simplify right side
201,728.80x = 41,982,748,866.24 - Step 5: Solve for x
x = 41,982,748,866.24/201,728.80 - Step 6: Final answer
x = 208,114.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.