Finding the Fourth Proportional to 288,991.13, 398,798.71 and 159,921.81
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Solution
The fourth proportional to 288,991.13, 398,798.71 and 159,921.81 is: 220,687.09
Step by Step Solution
- Step 1: Write the proportion equation
288,991.13 : 398,798.71 = 159,921.81 : x - Step 2: Convert to fraction form
288,991.13/398,798.71 = 159,921.81/x - Step 3: Cross multiply
288,991.13x = 398,798.71 × 159,921.81 - Step 4: Simplify right side
288,991.13x = 63,776,611,129.06 - Step 5: Solve for x
x = 63,776,611,129.06/288,991.13 - Step 6: Final answer
x = 220,687.09
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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.