Finding the Fourth Proportional to 243,399.84, 335,861.64 and 135,990.19
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Solution
The fourth proportional to 243,399.84, 335,861.64 and 135,990.19 is: 187,649.63
Step by Step Solution
- Step 1: Write the proportion equation
243,399.84 : 335,861.64 = 135,990.19 : x - Step 2: Convert to fraction form
243,399.84/335,861.64 = 135,990.19/x - Step 3: Cross multiply
243,399.84x = 335,861.64 × 135,990.19 - Step 4: Simplify right side
243,399.84x = 45,673,888,657.14 - Step 5: Solve for x
x = 45,673,888,657.14/243,399.84 - Step 6: Final answer
x = 187,649.63
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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.