Finding the Fourth Proportional to 215,721.41, 297,705.68 and 120,228.79
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Solution
The fourth proportional to 215,721.41, 297,705.68 and 120,228.79 is: 165,921.38
Step by Step Solution
- Step 1: Write the proportion equation
215,721.41 : 297,705.68 = 120,228.79 : x - Step 2: Convert to fraction form
215,721.41/297,705.68 = 120,228.79/x - Step 3: Cross multiply
215,721.41x = 297,705.68 × 120,228.79 - Step 4: Simplify right side
215,721.41x = 35,792,792,194.00 - Step 5: Solve for x
x = 35,792,792,194.00/215,721.41 - Step 6: Final answer
x = 165,921.38
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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.