Finding the Fourth Proportional to 405,721.20, 608,668.20 and 125,266.80
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Solution
The fourth proportional to 405,721.20, 608,668.20 and 125,266.80 is: 187,926.88
Step by Step Solution
- Step 1: Write the proportion equation
405,721.20 : 608,668.20 = 125,266.80 : x - Step 2: Convert to fraction form
405,721.20/608,668.20 = 125,266.80/x - Step 3: Cross multiply
405,721.20x = 608,668.20 × 125,266.80 - Step 4: Simplify right side
405,721.20x = 76,245,917,675.76 - Step 5: Solve for x
x = 76,245,917,675.76/405,721.20 - Step 6: Final answer
x = 187,926.88
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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.