Finding the Fourth Proportional to 208,992.69, 313,493.10 and 66,864.99
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Solution
The fourth proportional to 208,992.69, 313,493.10 and 66,864.99 is: 100,298.79
Step by Step Solution
- Step 1: Write the proportion equation
208,992.69 : 313,493.10 = 66,864.99 : x - Step 2: Convert to fraction form
208,992.69/313,493.10 = 66,864.99/x - Step 3: Cross multiply
208,992.69x = 313,493.10 × 66,864.99 - Step 4: Simplify right side
208,992.69x = 20,961,712,996.57 - Step 5: Solve for x
x = 20,961,712,996.57/208,992.69 - Step 6: Final answer
x = 100,298.79
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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.