Finding the Fourth Proportional to 216,660,422.28, 298,991,962.29 and 117,541,169.67
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Solution
The fourth proportional to 216,660,422.28, 298,991,962.29 and 117,541,169.67 is: 162,207,128.55
Step by Step Solution
- Step 1: Write the proportion equation
216,660,422.28 : 298,991,962.29 = 117,541,169.67 : x - Step 2: Convert to fraction form
216,660,422.28/298,991,962.29 = 117,541,169.67/x - Step 3: Cross multiply
216,660,422.28x = 298,991,962.29 × 117,541,169.67 - Step 4: Simplify right side
216,660,422.28x = 35,143,864,969,495,136 - Step 5: Solve for x
x = 35,143,864,969,495,136/216,660,422.28 - Step 6: Final answer
x = 162,207,128.55
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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.