Finding the Fourth Proportional to 215,917.25, 297,966.30 and 120,430.09
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Solution
The fourth proportional to 215,917.25, 297,966.30 and 120,430.09 is: 166,193.80
Step by Step Solution
- Step 1: Write the proportion equation
215,917.25 : 297,966.30 = 120,430.09 : x - Step 2: Convert to fraction form
215,917.25/297,966.30 = 120,430.09/x - Step 3: Cross multiply
215,917.25x = 297,966.30 × 120,430.09 - Step 4: Simplify right side
215,917.25x = 35,884,108,246.81 - Step 5: Solve for x
x = 35,884,108,246.81/215,917.25 - Step 6: Final answer
x = 166,193.80
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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.