Finding the Fourth Proportional to 309,407.40, 464,243.40 and 129,534.84
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Solution
The fourth proportional to 309,407.40, 464,243.40 and 129,534.84 is: 194,357.65
Step by Step Solution
- Step 1: Write the proportion equation
309,407.40 : 464,243.40 = 129,534.84 : x - Step 2: Convert to fraction form
309,407.40/464,243.40 = 129,534.84/x - Step 3: Cross multiply
309,407.40x = 464,243.40 × 129,534.84 - Step 4: Simplify right side
309,407.40x = 60,135,694,540.06 - Step 5: Solve for x
x = 60,135,694,540.06/309,407.40 - Step 6: Final answer
x = 194,357.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.