Finding the Fourth Proportional to 286,183.08, 394,918.56 and 157,118.40
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Solution
The fourth proportional to 286,183.08, 394,918.56 and 157,118.40 is: 216,815.66
Step by Step Solution
- Step 1: Write the proportion equation
286,183.08 : 394,918.56 = 157,118.40 : x - Step 2: Convert to fraction form
286,183.08/394,918.56 = 157,118.40/x - Step 3: Cross multiply
286,183.08x = 394,918.56 × 157,118.40 - Step 4: Simplify right side
286,183.08x = 62,048,972,277.50 - Step 5: Solve for x
x = 62,048,972,277.50/286,183.08 - Step 6: Final answer
x = 216,815.66
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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.