Finding the Fourth Proportional to 421,190,725.12, 581,218,947.84 and 233,007,930.88
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Solution
The fourth proportional to 421,190,725.12, 581,218,947.84 and 233,007,930.88 is: 321,537,527.65
Step by Step Solution
- Step 1: Write the proportion equation
421,190,725.12 : 581,218,947.84 = 233,007,930.88 : x - Step 2: Convert to fraction form
421,190,725.12/581,218,947.84 = 233,007,930.88/x - Step 3: Cross multiply
421,190,725.12x = 581,218,947.84 × 233,007,930.88 - Step 4: Simplify right side
421,190,725.12x = 135,428,624,424,449,056 - Step 5: Solve for x
x = 135,428,624,424,449,056/421,190,725.12 - Step 6: Final answer
x = 321,537,527.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.