Finding the Fourth Proportional to 512,716.80, 769,077.08 and 157,728.36
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Solution
The fourth proportional to 512,716.80, 769,077.08 and 157,728.36 is: 236,593.12
Step by Step Solution
- Step 1: Write the proportion equation
512,716.80 : 769,077.08 = 157,728.36 : x - Step 2: Convert to fraction form
512,716.80/769,077.08 = 157,728.36/x - Step 3: Cross multiply
512,716.80x = 769,077.08 × 157,728.36 - Step 4: Simplify right side
512,716.80x = 121,305,266,541.99 - Step 5: Solve for x
x = 121,305,266,541.99/512,716.80 - Step 6: Final answer
x = 236,593.12
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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.