Finding the Fourth Proportional to 518,721.21, 778,121.91 and 199,026.09
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Solution
The fourth proportional to 518,721.21, 778,121.91 and 199,026.09 is: 298,554.52
Step by Step Solution
- Step 1: Write the proportion equation
518,721.21 : 778,121.91 = 199,026.09 : x - Step 2: Convert to fraction form
518,721.21/778,121.91 = 199,026.09/x - Step 3: Cross multiply
518,721.21x = 778,121.91 × 199,026.09 - Step 4: Simplify right side
518,721.21x = 154,866,561,290.63 - Step 5: Solve for x
x = 154,866,561,290.63/518,721.21 - Step 6: Final answer
x = 298,554.52
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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.