Finding the Fourth Proportional to 210,816.50, 290,880.11 and 129,161.99
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Solution
The fourth proportional to 210,816.50, 290,880.11 and 129,161.99 is: 178,214.97
Step by Step Solution
- Step 1: Write the proportion equation
210,816.50 : 290,880.11 = 129,161.99 : x - Step 2: Convert to fraction form
210,816.50/290,880.11 = 129,161.99/x - Step 3: Cross multiply
210,816.50x = 290,880.11 × 129,161.99 - Step 4: Simplify right side
210,816.50x = 37,570,654,909.12 - Step 5: Solve for x
x = 37,570,654,909.12/210,816.50 - Step 6: Final answer
x = 178,214.97
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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.