Finding the Fourth Proportional to 211,371.80, 317,057.70 and 71,115.80
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Solution
The fourth proportional to 211,371.80, 317,057.70 and 71,115.80 is: 106,673.70
Step by Step Solution
- Step 1: Write the proportion equation
211,371.80 : 317,057.70 = 71,115.80 : x - Step 2: Convert to fraction form
211,371.80/317,057.70 = 71,115.80/x - Step 3: Cross multiply
211,371.80x = 317,057.70 × 71,115.80 - Step 4: Simplify right side
211,371.80x = 22,547,811,981.66 - Step 5: Solve for x
x = 22,547,811,981.66/211,371.80 - Step 6: Final answer
x = 106,673.70
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1.5x scale
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.