Finding the Fourth Proportional to 405,736.20, 608,690.70 and 125,281.80
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Solution
The fourth proportional to 405,736.20, 608,690.70 and 125,281.80 is: 187,949.38
Step by Step Solution
- Step 1: Write the proportion equation
405,736.20 : 608,690.70 = 125,281.80 : x - Step 2: Convert to fraction form
405,736.20/608,690.70 = 125,281.80/x - Step 3: Cross multiply
405,736.20x = 608,690.70 × 125,281.80 - Step 4: Simplify right side
405,736.20x = 76,257,866,539.26 - Step 5: Solve for x
x = 76,257,866,539.26/405,736.20 - Step 6: Final answer
x = 187,949.38
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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.