Finding the Fourth Proportional to 208,920.99, 313,488.36 and 99,499.80
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Solution
The fourth proportional to 208,920.99, 313,488.36 and 99,499.80 is: 149,300.60
Step by Step Solution
- Step 1: Write the proportion equation
208,920.99 : 313,488.36 = 99,499.80 : x - Step 2: Convert to fraction form
208,920.99/313,488.36 = 99,499.80/x - Step 3: Cross multiply
208,920.99x = 313,488.36 × 99,499.80 - Step 4: Simplify right side
208,920.99x = 31,192,029,835.99 - Step 5: Solve for x
x = 31,192,029,835.99/208,920.99 - Step 6: Final answer
x = 149,300.60
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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.