Finding the Fourth Proportional to 211,438.49, 317,158.79 and 53,666.99
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Solution
The fourth proportional to 211,438.49, 317,158.79 and 53,666.99 is: 80,500.75
Step by Step Solution
- Step 1: Write the proportion equation
211,438.49 : 317,158.79 = 53,666.99 : x - Step 2: Convert to fraction form
211,438.49/317,158.79 = 53,666.99/x - Step 3: Cross multiply
211,438.49x = 317,158.79 × 53,666.99 - Step 4: Simplify right side
211,438.49x = 17,020,957,349.06 - Step 5: Solve for x
x = 17,020,957,349.06/211,438.49 - Step 6: Final answer
x = 80,500.75
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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.