Finding the Fourth Proportional to 210,817.50, 290,881.49 and 129,162.99
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Solution
The fourth proportional to 210,817.50, 290,881.49 and 129,162.99 is: 178,216.34
Step by Step Solution
- Step 1: Write the proportion equation
210,817.50 : 290,881.49 = 129,162.99 : x - Step 2: Convert to fraction form
210,817.50/290,881.49 = 129,162.99/x - Step 3: Cross multiply
210,817.50x = 290,881.49 × 129,162.99 - Step 4: Simplify right side
210,817.50x = 37,571,122,984.06 - Step 5: Solve for x
x = 37,571,122,984.06/210,817.50 - Step 6: Final answer
x = 178,216.34
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1.5x scale
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.