Finding the Fourth Proportional to 288,969.12, 398,792.88 and 161,637.12
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Solution
The fourth proportional to 288,969.12, 398,792.88 and 161,637.12 is: 223,067.89
Step by Step Solution
- Step 1: Write the proportion equation
288,969.12 : 398,792.88 = 161,637.12 : x - Step 2: Convert to fraction form
288,969.12/398,792.88 = 161,637.12/x - Step 3: Cross multiply
288,969.12x = 398,792.88 × 161,637.12 - Step 4: Simplify right side
288,969.12x = 64,459,732,599.71 - Step 5: Solve for x
x = 64,459,732,599.71/288,969.12 - Step 6: Final answer
x = 223,067.89
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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.