Finding the Fourth Proportional to 208,534.12, 312,769.50 and 68,289.64
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Solution
The fourth proportional to 208,534.12, 312,769.50 and 68,289.64 is: 102,424.09
Step by Step Solution
- Step 1: Write the proportion equation
208,534.12 : 312,769.50 = 68,289.64 : x - Step 2: Convert to fraction form
208,534.12/312,769.50 = 68,289.64/x - Step 3: Cross multiply
208,534.12x = 312,769.50 × 68,289.64 - Step 4: Simplify right side
208,534.12x = 21,358,916,557.98 - Step 5: Solve for x
x = 21,358,916,557.98/208,534.12 - Step 6: Final answer
x = 102,424.09
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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.