Finding the Fourth Proportional to 389,967.62, 538,183.17 and 215,534.08
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Solution
The fourth proportional to 389,967.62, 538,183.17 and 215,534.08 is: 297,452.43
Step by Step Solution
- Step 1: Write the proportion equation
389,967.62 : 538,183.17 = 215,534.08 : x - Step 2: Convert to fraction form
389,967.62/538,183.17 = 215,534.08/x - Step 3: Cross multiply
389,967.62x = 538,183.17 × 215,534.08 - Step 4: Simplify right side
389,967.62x = 115,996,813,339.76 - Step 5: Solve for x
x = 115,996,813,339.76/389,967.62 - Step 6: Final answer
x = 297,452.43
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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.