Finding the Fourth Proportional to 208,809.96, 288,154.68 and 122,778.66
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Solution
The fourth proportional to 208,809.96, 288,154.68 and 122,778.66 is: 169,432.75
Step by Step Solution
- Step 1: Write the proportion equation
208,809.96 : 288,154.68 = 122,778.66 : x - Step 2: Convert to fraction form
208,809.96/288,154.68 = 122,778.66/x - Step 3: Cross multiply
208,809.96x = 288,154.68 × 122,778.66 - Step 4: Simplify right side
208,809.96x = 35,379,245,483.13 - Step 5: Solve for x
x = 35,379,245,483.13/208,809.96 - Step 6: Final answer
x = 169,432.75
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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.