Finding the Fourth Proportional to 261,914.91, 392,874.84 and 143,521.62
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Solution
The fourth proportional to 261,914.91, 392,874.84 and 143,521.62 is: 215,283.79
Step by Step Solution
- Step 1: Write the proportion equation
261,914.91 : 392,874.84 = 143,521.62 : x - Step 2: Convert to fraction form
261,914.91/392,874.84 = 143,521.62/x - Step 3: Cross multiply
261,914.91x = 392,874.84 × 143,521.62 - Step 4: Simplify right side
261,914.91x = 56,386,033,494.04 - Step 5: Solve for x
x = 56,386,033,494.04/261,914.91 - Step 6: Final answer
x = 215,283.79
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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.