Finding the Fourth Proportional to 221,465.20, 332,197.80 and 212,717.20
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Solution
The fourth proportional to 221,465.20, 332,197.80 and 212,717.20 is: 319,075.80
Step by Step Solution
- Step 1: Write the proportion equation
221,465.20 : 332,197.80 = 212,717.20 : x - Step 2: Convert to fraction form
221,465.20/332,197.80 = 212,717.20/x - Step 3: Cross multiply
221,465.20x = 332,197.80 × 212,717.20 - Step 4: Simplify right side
221,465.20x = 70,664,185,862.16 - Step 5: Solve for x
x = 70,664,185,862.16/221,465.20 - Step 6: Final answer
x = 319,075.80
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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.