Finding the Fourth Proportional to 288,991.36, 398,808.66 and 161,669.08
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Solution
The fourth proportional to 288,991.36, 398,808.66 and 161,669.08 is: 223,103.66
Step by Step Solution
- Step 1: Write the proportion equation
288,991.36 : 398,808.66 = 161,669.08 : x - Step 2: Convert to fraction form
288,991.36/398,808.66 = 161,669.08/x - Step 3: Cross multiply
288,991.36x = 398,808.66 × 161,669.08 - Step 4: Simplify right side
288,991.36x = 64,475,029,158.23 - Step 5: Solve for x
x = 64,475,029,158.23/288,991.36 - Step 6: Final answer
x = 223,103.66
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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.