Finding the Fourth Proportional to 212,866.70, 318,891.80 and 119,438.06
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Solution
The fourth proportional to 212,866.70, 318,891.80 and 119,438.06 is: 178,928.02
Step by Step Solution
- Step 1: Write the proportion equation
212,866.70 : 318,891.80 = 119,438.06 : x - Step 2: Convert to fraction form
212,866.70/318,891.80 = 119,438.06/x - Step 3: Cross multiply
212,866.70x = 318,891.80 × 119,438.06 - Step 4: Simplify right side
212,866.70x = 38,087,816,646.04 - Step 5: Solve for x
x = 38,087,816,646.04/212,866.70 - Step 6: Final answer
x = 178,928.02
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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.