Finding the Fourth Proportional to 286,111.36, 394,826.16 and 158,783.68
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Solution
The fourth proportional to 286,111.36, 394,826.16 and 158,783.68 is: 219,117.31
Step by Step Solution
- Step 1: Write the proportion equation
286,111.36 : 394,826.16 = 158,783.68 : x - Step 2: Convert to fraction form
286,111.36/394,826.16 = 158,783.68/x - Step 3: Cross multiply
286,111.36x = 394,826.16 × 158,783.68 - Step 4: Simplify right side
286,111.36x = 62,691,950,645.07 - Step 5: Solve for x
x = 62,691,950,645.07/286,111.36 - Step 6: Final answer
x = 219,117.31
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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.