Finding the Fourth Proportional to 210,880.21, 316,320.72 and 53,107.60
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Solution
The fourth proportional to 210,880.21, 316,320.72 and 53,107.60 is: 79,661.50
Step by Step Solution
- Step 1: Write the proportion equation
210,880.21 : 316,320.72 = 53,107.60 : x - Step 2: Convert to fraction form
210,880.21/316,320.72 = 53,107.60/x - Step 3: Cross multiply
210,880.21x = 316,320.72 × 53,107.60 - Step 4: Simplify right side
210,880.21x = 16,799,034,269.47 - Step 5: Solve for x
x = 16,799,034,269.47/210,880.21 - Step 6: Final answer
x = 79,661.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.