Finding the Fourth Proportional to 221,678.20, 332,517.30 and 133,031.80
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Solution
The fourth proportional to 221,678.20, 332,517.30 and 133,031.80 is: 199,547.70
Step by Step Solution
- Step 1: Write the proportion equation
221,678.20 : 332,517.30 = 133,031.80 : x - Step 2: Convert to fraction form
221,678.20/332,517.30 = 133,031.80/x - Step 3: Cross multiply
221,678.20x = 332,517.30 × 133,031.80 - Step 4: Simplify right side
221,678.20x = 44,235,374,950.14 - Step 5: Solve for x
x = 44,235,374,950.14/221,678.20 - Step 6: Final answer
x = 199,547.70
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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.