Finding the Fourth Proportional to 391,524.18, 540,288.93 and 212,672.34
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Solution
The fourth proportional to 391,524.18, 540,288.93 and 212,672.34 is: 293,479.99
Step by Step Solution
- Step 1: Write the proportion equation
391,524.18 : 540,288.93 = 212,672.34 : x - Step 2: Convert to fraction form
391,524.18/540,288.93 = 212,672.34/x - Step 3: Cross multiply
391,524.18x = 540,288.93 × 212,672.34 - Step 4: Simplify right side
391,524.18x = 114,904,511,019.20 - Step 5: Solve for x
x = 114,904,511,019.20/391,524.18 - Step 6: Final answer
x = 293,479.99
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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.