Finding the Fourth Proportional to 307,769.42, 461,816.64 and 218,389.70
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Solution
The fourth proportional to 307,769.42, 461,816.64 and 218,389.70 is: 327,699.87
Step by Step Solution
- Step 1: Write the proportion equation
307,769.42 : 461,816.64 = 218,389.70 : x - Step 2: Convert to fraction form
307,769.42/461,816.64 = 218,389.70/x - Step 3: Cross multiply
307,769.42x = 461,816.64 × 218,389.70 - Step 4: Simplify right side
307,769.42x = 100,855,998,619.15 - Step 5: Solve for x
x = 100,855,998,619.15/307,769.42 - Step 6: Final answer
x = 327,699.87
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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.