Finding the Fourth Proportional to 307,719.09, 424,635.08 and 171,761.81
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Solution
The fourth proportional to 307,719.09, 424,635.08 and 171,761.81 is: 237,021.65
Step by Step Solution
- Step 1: Write the proportion equation
307,719.09 : 424,635.08 = 171,761.81 : x - Step 2: Convert to fraction form
307,719.09/424,635.08 = 171,761.81/x - Step 3: Cross multiply
307,719.09x = 424,635.08 × 171,761.81 - Step 4: Simplify right side
307,719.09x = 72,936,088,142.60 - Step 5: Solve for x
x = 72,936,088,142.60/307,719.09 - Step 6: Final answer
x = 237,021.65
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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.