Finding the Fourth Proportional to 328,121.20, 492,181.80 and 117,731.80
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Solution
The fourth proportional to 328,121.20, 492,181.80 and 117,731.80 is: 176,597.70
Step by Step Solution
- Step 1: Write the proportion equation
328,121.20 : 492,181.80 = 117,731.80 : x - Step 2: Convert to fraction form
328,121.20/492,181.80 = 117,731.80/x - Step 3: Cross multiply
328,121.20x = 492,181.80 × 117,731.80 - Step 4: Simplify right side
328,121.20x = 57,945,449,241.24 - Step 5: Solve for x
x = 57,945,449,241.24/328,121.20 - Step 6: Final answer
x = 176,597.70
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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.