Finding the Fourth Proportional to 239,971.96, 331,201.74 and 139,428.28
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Solution
The fourth proportional to 239,971.96, 331,201.74 and 139,428.28 is: 192,434.52
Step by Step Solution
- Step 1: Write the proportion equation
239,971.96 : 331,201.74 = 139,428.28 : x - Step 2: Convert to fraction form
239,971.96/331,201.74 = 139,428.28/x - Step 3: Cross multiply
239,971.96x = 331,201.74 × 139,428.28 - Step 4: Simplify right side
239,971.96x = 46,178,888,941.21 - Step 5: Solve for x
x = 46,178,888,941.21/239,971.96 - Step 6: Final answer
x = 192,434.52
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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.