Finding the Fourth Proportional to 239,143.74, 330,018.75 and 131,713.98
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Solution
The fourth proportional to 239,143.74, 330,018.75 and 131,713.98 is: 181,765.51
Step by Step Solution
- Step 1: Write the proportion equation
239,143.74 : 330,018.75 = 131,713.98 : x - Step 2: Convert to fraction form
239,143.74/330,018.75 = 131,713.98/x - Step 3: Cross multiply
239,143.74x = 330,018.75 × 131,713.98 - Step 4: Simplify right side
239,143.74x = 43,468,083,037.13 - Step 5: Solve for x
x = 43,468,083,037.13/239,143.74 - Step 6: Final answer
x = 181,765.51
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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.