Finding the Fourth Proportional to 261,810.69, 392,738.58 and 72,271.09
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Solution
The fourth proportional to 261,810.69, 392,738.58 and 72,271.09 is: 108,412.86
Step by Step Solution
- Step 1: Write the proportion equation
261,810.69 : 392,738.58 = 72,271.09 : x - Step 2: Convert to fraction form
261,810.69/392,738.58 = 72,271.09/x - Step 3: Cross multiply
261,810.69x = 392,738.58 × 72,271.09 - Step 4: Simplify right side
261,810.69x = 28,383,645,261.65 - Step 5: Solve for x
x = 28,383,645,261.65/261,810.69 - Step 6: Final answer
x = 108,412.86
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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.