Finding the Fourth Proportional to 261,843.21, 361,384.67 and 154,425.06
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Solution
The fourth proportional to 261,843.21, 361,384.67 and 154,425.06 is: 213,130.79
Step by Step Solution
- Step 1: Write the proportion equation
261,843.21 : 361,384.67 = 154,425.06 : x - Step 2: Convert to fraction form
261,843.21/361,384.67 = 154,425.06/x - Step 3: Cross multiply
261,843.21x = 361,384.67 × 154,425.06 - Step 4: Simplify right side
261,843.21x = 55,806,849,733.89 - Step 5: Solve for x
x = 55,806,849,733.89/261,843.21 - Step 6: Final answer
x = 213,130.79
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1.5x scale
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.