Finding the Fourth Proportional to 392,963.91, 542,290.19 and 214,115.91
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Solution
The fourth proportional to 392,963.91, 542,290.19 and 214,115.91 is: 295,479.95
Step by Step Solution
- Step 1: Write the proportion equation
392,963.91 : 542,290.19 = 214,115.91 : x - Step 2: Convert to fraction form
392,963.91/542,290.19 = 214,115.91/x - Step 3: Cross multiply
392,963.91x = 542,290.19 × 214,115.91 - Step 4: Simplify right side
392,963.91x = 116,112,955,616.16 - Step 5: Solve for x
x = 116,112,955,616.16/392,963.91 - Step 6: Final answer
x = 295,479.95
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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.