Finding the Fourth Proportional to 282,458.68, 389,860.20 and 161,669.68
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Solution
The fourth proportional to 282,458.68, 389,860.20 and 161,669.68 is: 223,142.63
Step by Step Solution
- Step 1: Write the proportion equation
282,458.68 : 389,860.20 = 161,669.68 : x - Step 2: Convert to fraction form
282,458.68/389,860.20 = 161,669.68/x - Step 3: Cross multiply
282,458.68x = 389,860.20 × 161,669.68 - Step 4: Simplify right side
282,458.68x = 63,028,573,778.74 - Step 5: Solve for x
x = 63,028,573,778.74/282,458.68 - Step 6: Final answer
x = 223,142.63
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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.