Finding the Fourth Proportional to 212,714.80, 319,072.20 and 149,729.20
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Solution
The fourth proportional to 212,714.80, 319,072.20 and 149,729.20 is: 224,593.80
Step by Step Solution
- Step 1: Write the proportion equation
212,714.80 : 319,072.20 = 149,729.20 : x - Step 2: Convert to fraction form
212,714.80/319,072.20 = 149,729.20/x - Step 3: Cross multiply
212,714.80x = 319,072.20 × 149,729.20 - Step 4: Simplify right side
212,714.80x = 47,774,425,248.24 - Step 5: Solve for x
x = 47,774,425,248.24/212,714.80 - Step 6: Final answer
x = 224,593.80
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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.