Finding the Fourth Proportional to 210,297.94, 290,315.21 and 129,769.81
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Solution
The fourth proportional to 210,297.94, 290,315.21 and 129,769.81 is: 179,146.55
Step by Step Solution
- Step 1: Write the proportion equation
210,297.94 : 290,315.21 = 129,769.81 : x - Step 2: Convert to fraction form
210,297.94/290,315.21 = 129,769.81/x - Step 3: Cross multiply
210,297.94x = 290,315.21 × 129,769.81 - Step 4: Simplify right side
210,297.94x = 37,674,149,966.23 - Step 5: Solve for x
x = 37,674,149,966.23/210,297.94 - Step 6: Final answer
x = 179,146.55
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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.