Finding the Fourth Proportional to 207,539.12, 286,384.56 and 122,639.96
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Solution
The fourth proportional to 207,539.12, 286,384.56 and 122,639.96 is: 169,231.67
Step by Step Solution
- Step 1: Write the proportion equation
207,539.12 : 286,384.56 = 122,639.96 : x - Step 2: Convert to fraction form
207,539.12/286,384.56 = 122,639.96/x - Step 3: Cross multiply
207,539.12x = 286,384.56 × 122,639.96 - Step 4: Simplify right side
207,539.12x = 35,122,190,983.02 - Step 5: Solve for x
x = 35,122,190,983.02/207,539.12 - Step 6: Final answer
x = 169,231.67
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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.