Finding the Fourth Proportional to 308,956.58, 426,324.84 and 172,971.62
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Solution
The fourth proportional to 308,956.58, 426,324.84 and 172,971.62 is: 238,681.11
Step by Step Solution
- Step 1: Write the proportion equation
308,956.58 : 426,324.84 = 172,971.62 : x - Step 2: Convert to fraction form
308,956.58/426,324.84 = 172,971.62/x - Step 3: Cross multiply
308,956.58x = 426,324.84 × 172,971.62 - Step 4: Simplify right side
308,956.58x = 73,742,098,221.04 - Step 5: Solve for x
x = 73,742,098,221.04/308,956.58 - Step 6: Final answer
x = 238,681.11
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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.