Finding the Fourth Proportional to 210,489.12, 290,474.64 and 114,995.79
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Solution
The fourth proportional to 210,489.12, 290,474.64 and 114,995.79 is: 158,694.00
Step by Step Solution
- Step 1: Write the proportion equation
210,489.12 : 290,474.64 = 114,995.79 : x - Step 2: Convert to fraction form
210,489.12/290,474.64 = 114,995.79/x - Step 3: Cross multiply
210,489.12x = 290,474.64 × 114,995.79 - Step 4: Simplify right side
210,489.12x = 33,403,360,701.77 - Step 5: Solve for x
x = 33,403,360,701.77/210,489.12 - Step 6: Final answer
x = 158,694.00
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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.