Finding the Fourth Proportional to 312,443.21, 431,170.97 and 169,202.81
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Solution
The fourth proportional to 312,443.21, 431,170.97 and 169,202.81 is: 233,499.51
Step by Step Solution
- Step 1: Write the proportion equation
312,443.21 : 431,170.97 = 169,202.81 : x - Step 2: Convert to fraction form
312,443.21/431,170.97 = 169,202.81/x - Step 3: Cross multiply
312,443.21x = 431,170.97 × 169,202.81 - Step 4: Simplify right side
312,443.21x = 72,955,336,712.56 - Step 5: Solve for x
x = 72,955,336,712.56/312,443.21 - Step 6: Final answer
x = 233,499.51
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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.