Finding the Fourth Proportional to 208,910.91, 288,011.42 and 143,497.74
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Solution
The fourth proportional to 208,910.91, 288,011.42 and 143,497.74 is: 197,830.68
Step by Step Solution
- Step 1: Write the proportion equation
208,910.91 : 288,011.42 = 143,497.74 : x - Step 2: Convert to fraction form
208,910.91/288,011.42 = 143,497.74/x - Step 3: Cross multiply
208,910.91x = 288,011.42 × 143,497.74 - Step 4: Simplify right side
208,910.91x = 41,328,987,864.19 - Step 5: Solve for x
x = 41,328,987,864.19/208,910.91 - Step 6: Final answer
x = 197,830.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.