Finding the Fourth Proportional to 421,226.39, 631,997.36 and 218,696.07
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Solution
The fourth proportional to 421,226.39, 631,997.36 and 218,696.07 is: 328,126.02
Step by Step Solution
- Step 1: Write the proportion equation
421,226.39 : 631,997.36 = 218,696.07 : x - Step 2: Convert to fraction form
421,226.39/631,997.36 = 218,696.07/x - Step 3: Cross multiply
421,226.39x = 631,997.36 × 218,696.07 - Step 4: Simplify right side
421,226.39x = 138,215,338,853.23 - Step 5: Solve for x
x = 138,215,338,853.23/421,226.39 - Step 6: Final answer
x = 328,126.02
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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.