Finding the Fourth Proportional to 208,912.90, 288,306.69 and 118,266.99
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Solution
The fourth proportional to 208,912.90, 288,306.69 and 118,266.99 is: 163,212.35
Step by Step Solution
- Step 1: Write the proportion equation
208,912.90 : 288,306.69 = 118,266.99 : x - Step 2: Convert to fraction form
208,912.90/288,306.69 = 118,266.99/x - Step 3: Cross multiply
208,912.90x = 288,306.69 × 118,266.99 - Step 4: Simplify right side
208,912.90x = 34,097,164,423.16 - Step 5: Solve for x
x = 34,097,164,423.16/208,912.90 - Step 6: Final answer
x = 163,212.35
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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.