Finding the Fourth Proportional to 286,164.11, 394,911.11 and 157,114.49
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Solution
The fourth proportional to 286,164.11, 394,911.11 and 157,114.49 is: 216,820.54
Step by Step Solution
- Step 1: Write the proportion equation
286,164.11 : 394,911.11 = 157,114.49 : x - Step 2: Convert to fraction form
286,164.11/394,911.11 = 157,114.49/x - Step 3: Cross multiply
286,164.11x = 394,911.11 × 157,114.49 - Step 4: Simplify right side
286,164.11x = 62,046,256,061.21 - Step 5: Solve for x
x = 62,046,256,061.21/286,164.11 - Step 6: Final answer
x = 216,820.54
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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.