Finding the Fourth Proportional to 210,908.12, 291,043.87 and 115,418.84
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Solution
The fourth proportional to 210,908.12, 291,043.87 and 115,418.84 is: 159,272.89
Step by Step Solution
- Step 1: Write the proportion equation
210,908.12 : 291,043.87 = 115,418.84 : x - Step 2: Convert to fraction form
210,908.12/291,043.87 = 115,418.84/x - Step 3: Cross multiply
210,908.12x = 291,043.87 × 115,418.84 - Step 4: Simplify right side
210,908.12x = 33,591,944,120.74 - Step 5: Solve for x
x = 33,591,944,120.74/210,908.12 - Step 6: Final answer
x = 159,272.89
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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.