Finding the Fourth Proportional to 206,798.70, 285,309.54 and 135,220.62
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Solution
The fourth proportional to 206,798.70, 285,309.54 and 135,220.62 is: 186,556.94
Step by Step Solution
- Step 1: Write the proportion equation
206,798.70 : 285,309.54 = 135,220.62 : x - Step 2: Convert to fraction form
206,798.70/285,309.54 = 135,220.62/x - Step 3: Cross multiply
206,798.70x = 285,309.54 × 135,220.62 - Step 4: Simplify right side
206,798.70x = 38,579,732,890.71 - Step 5: Solve for x
x = 38,579,732,890.71/206,798.70 - Step 6: Final answer
x = 186,556.94
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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.