Finding the Fourth Proportional to 387,344.40, 534,467.88 and 217,585.68
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Solution
The fourth proportional to 387,344.40, 534,467.88 and 217,585.68 is: 300,230.38
Step by Step Solution
- Step 1: Write the proportion equation
387,344.40 : 534,467.88 = 217,585.68 : x - Step 2: Convert to fraction form
387,344.40/534,467.88 = 217,585.68/x - Step 3: Cross multiply
387,344.40x = 534,467.88 × 217,585.68 - Step 4: Simplify right side
387,344.40x = 116,292,557,107.96 - Step 5: Solve for x
x = 116,292,557,107.96/387,344.40 - Step 6: Final answer
x = 300,230.38
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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.