Finding the Fourth Proportional to 286,164.98, 394,912.32 and 157,115.36
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Solution
The fourth proportional to 286,164.98, 394,912.32 and 157,115.36 is: 216,821.75
Step by Step Solution
- Step 1: Write the proportion equation
286,164.98 : 394,912.32 = 157,115.36 : x - Step 2: Convert to fraction form
286,164.98/394,912.32 = 157,115.36/x - Step 3: Cross multiply
286,164.98x = 394,912.32 × 157,115.36 - Step 4: Simplify right side
286,164.98x = 62,046,791,325.24 - Step 5: Solve for x
x = 62,046,791,325.24/286,164.98 - Step 6: Final answer
x = 216,821.75
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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.