Finding the Fourth Proportional to 387,827.28, 535,195.17 and 215,743.18
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Solution
The fourth proportional to 387,827.28, 535,195.17 and 215,743.18 is: 297,721.99
Step by Step Solution
- Step 1: Write the proportion equation
387,827.28 : 535,195.17 = 215,743.18 : x - Step 2: Convert to fraction form
387,827.28/535,195.17 = 215,743.18/x - Step 3: Cross multiply
387,827.28x = 535,195.17 × 215,743.18 - Step 4: Simplify right side
387,827.28x = 115,464,707,896.44 - Step 5: Solve for x
x = 115,464,707,896.44/387,827.28 - Step 6: Final answer
x = 297,721.99
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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.