Finding the Fourth Proportional to 216,660,420.26, 298,991,959.49 and 117,541,167.65
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Solution
The fourth proportional to 216,660,420.26, 298,991,959.49 and 117,541,167.65 is: 162,207,125.76
Step by Step Solution
- Step 1: Write the proportion equation
216,660,420.26 : 298,991,959.49 = 117,541,167.65 : x - Step 2: Convert to fraction form
216,660,420.26/298,991,959.49 = 117,541,167.65/x - Step 3: Cross multiply
216,660,420.26x = 298,991,959.49 × 117,541,167.65 - Step 4: Simplify right side
216,660,420.26x = 35,143,864,036,416,100 - Step 5: Solve for x
x = 35,143,864,036,416,100/216,660,420.26 - Step 6: Final answer
x = 162,207,125.76
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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.