Finding the Fourth Proportional to 220,682.68, 304,573.12 and 128,832.09
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Solution
The fourth proportional to 220,682.68, 304,573.12 and 128,832.09 is: 177,806.39
Step by Step Solution
- Step 1: Write the proportion equation
220,682.68 : 304,573.12 = 128,832.09 : x - Step 2: Convert to fraction form
220,682.68/304,573.12 = 128,832.09/x - Step 3: Cross multiply
220,682.68x = 304,573.12 × 128,832.09 - Step 4: Simplify right side
220,682.68x = 39,238,791,607.42 - Step 5: Solve for x
x = 39,238,791,607.42/220,682.68 - Step 6: Final answer
x = 177,806.39
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1.5x scale
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.