Finding the Fourth Proportional to 286,292.20, 428,855.10 and 146,129.80
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Solution
The fourth proportional to 286,292.20, 428,855.10 and 146,129.80 is: 218,897.02
Step by Step Solution
- Step 1: Write the proportion equation
286,292.20 : 428,855.10 = 146,129.80 : x - Step 2: Convert to fraction form
286,292.20/428,855.10 = 146,129.80/x - Step 3: Cross multiply
286,292.20x = 428,855.10 × 146,129.80 - Step 4: Simplify right side
286,292.20x = 62,668,509,991.98 - Step 5: Solve for x
x = 62,668,509,991.98/286,292.20 - Step 6: Final answer
x = 218,897.02
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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.