Finding the Fourth Proportional to 210,786.49, 290,877.99 and 120,171.63
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Solution
The fourth proportional to 210,786.49, 290,877.99 and 120,171.63 is: 165,832.66
Step by Step Solution
- Step 1: Write the proportion equation
210,786.49 : 290,877.99 = 120,171.63 : x - Step 2: Convert to fraction form
210,786.49/290,877.99 = 120,171.63/x - Step 3: Cross multiply
210,786.49x = 290,877.99 × 120,171.63 - Step 4: Simplify right side
210,786.49x = 34,955,282,829.57 - Step 5: Solve for x
x = 34,955,282,829.57/210,786.49 - Step 6: Final answer
x = 165,832.66
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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.