Finding the Fourth Proportional to 213,006.99, 317,766.09 and 207,215.53
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Solution
The fourth proportional to 213,006.99, 317,766.09 and 207,215.53 is: 309,126.33
Step by Step Solution
- Step 1: Write the proportion equation
213,006.99 : 317,766.09 = 207,215.53 : x - Step 2: Convert to fraction form
213,006.99/317,766.09 = 207,215.53/x - Step 3: Cross multiply
213,006.99x = 317,766.09 × 207,215.53 - Step 4: Simplify right side
213,006.99x = 65,846,068,755.38 - Step 5: Solve for x
x = 65,846,068,755.38/213,006.99 - Step 6: Final answer
x = 309,126.33
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.