Finding the Fourth Proportional to 211,778.49, 317,574.48 and 99,490.62
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Solution
The fourth proportional to 211,778.49, 317,574.48 and 99,490.62 is: 149,192.12
Step by Step Solution
- Step 1: Write the proportion equation
211,778.49 : 317,574.48 = 99,490.62 : x - Step 2: Convert to fraction form
211,778.49/317,574.48 = 99,490.62/x - Step 3: Cross multiply
211,778.49x = 317,574.48 × 99,490.62 - Step 4: Simplify right side
211,778.49x = 31,595,681,911.38 - Step 5: Solve for x
x = 31,595,681,911.38/211,778.49 - Step 6: Final answer
x = 149,192.12
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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.