Finding the Fourth Proportional to 392,993.69, 589,605.36 and 126,748.31
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Solution
The fourth proportional to 392,993.69, 589,605.36 and 126,748.31 is: 190,159.50
Step by Step Solution
- Step 1: Write the proportion equation
392,993.69 : 589,605.36 = 126,748.31 : x - Step 2: Convert to fraction form
392,993.69/589,605.36 = 126,748.31/x - Step 3: Cross multiply
392,993.69x = 589,605.36 × 126,748.31 - Step 4: Simplify right side
392,993.69x = 74,731,482,313.20 - Step 5: Solve for x
x = 74,731,482,313.20/392,993.69 - Step 6: Final answer
x = 190,159.50
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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.