Finding the Fourth Proportional to 221,378,212.80, 332,209,036.80 and 129,261,772.80
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Solution
The fourth proportional to 221,378,212.80, 332,209,036.80 and 129,261,772.80 is: 193,975,407.49
Step by Step Solution
- Step 1: Write the proportion equation
221,378,212.80 : 332,209,036.80 = 129,261,772.80 : x - Step 2: Convert to fraction form
221,378,212.80/332,209,036.80 = 129,261,772.80/x - Step 3: Cross multiply
221,378,212.80x = 332,209,036.80 × 129,261,772.80 - Step 4: Simplify right side
221,378,212.80x = 42,941,929,036,948,440 - Step 5: Solve for x
x = 42,941,929,036,948,440/221,378,212.80 - Step 6: Final answer
x = 193,975,407.49
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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.