Finding the Fourth Proportional to 285,812.12, 394,419.30 and 158,509.28
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Solution
The fourth proportional to 285,812.12, 394,419.30 and 158,509.28 is: 218,742.02
Step by Step Solution
- Step 1: Write the proportion equation
285,812.12 : 394,419.30 = 158,509.28 : x - Step 2: Convert to fraction form
285,812.12/394,419.30 = 158,509.28/x - Step 3: Cross multiply
285,812.12x = 394,419.30 × 158,509.28 - Step 4: Simplify right side
285,812.12x = 62,519,119,261.10 - Step 5: Solve for x
x = 62,519,119,261.10/285,812.12 - Step 6: Final answer
x = 218,742.02
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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.