Finding the Fourth Proportional to 225,620.20, 338,430.30 and 212,717.80
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Solution
The fourth proportional to 225,620.20, 338,430.30 and 212,717.80 is: 319,076.70
Step by Step Solution
- Step 1: Write the proportion equation
225,620.20 : 338,430.30 = 212,717.80 : x - Step 2: Convert to fraction form
225,620.20/338,430.30 = 212,717.80/x - Step 3: Cross multiply
225,620.20x = 338,430.30 × 212,717.80 - Step 4: Simplify right side
225,620.20x = 71,990,148,869.34 - Step 5: Solve for x
x = 71,990,148,869.34/225,620.20 - Step 6: Final answer
x = 319,076.70
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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.