Finding the Fourth Proportional to 310,721.03, 428,992.02 and 212,768.18
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Solution
The fourth proportional to 310,721.03, 428,992.02 and 212,768.18 is: 293,754.99
Step by Step Solution
- Step 1: Write the proportion equation
310,721.03 : 428,992.02 = 212,768.18 : x - Step 2: Convert to fraction form
310,721.03/428,992.02 = 212,768.18/x - Step 3: Cross multiply
310,721.03x = 428,992.02 × 212,768.18 - Step 4: Simplify right side
310,721.03x = 91,275,850,261.76 - Step 5: Solve for x
x = 91,275,850,261.76/310,721.03 - Step 6: Final answer
x = 293,754.99
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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.