Finding the Fourth Proportional to 221,435,639.20, 332,153,458.80 and 129,224,720.80
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Solution
The fourth proportional to 221,435,639.20, 332,153,458.80 and 129,224,720.80 is: 193,837,081.20
Step by Step Solution
- Step 1: Write the proportion equation
221,435,639.20 : 332,153,458.80 = 129,224,720.80 : x - Step 2: Convert to fraction form
221,435,639.20/332,153,458.80 = 129,224,720.80/x - Step 3: Cross multiply
221,435,639.20x = 332,153,458.80 × 129,224,720.80 - Step 4: Simplify right side
221,435,639.20x = 42,922,437,976,184,304 - Step 5: Solve for x
x = 42,922,437,976,184,304/221,435,639.20 - Step 6: Final answer
x = 193,837,081.20
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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.