Finding the Fourth Proportional to 686,537.20, 1,030,000.20 and 213,270.40
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Solution
The fourth proportional to 686,537.20, 1,030,000.20 and 213,270.40 is: 319,965.99
Step by Step Solution
- Step 1: Write the proportion equation
686,537.20 : 1,030,000.20 = 213,270.40 : x - Step 2: Convert to fraction form
686,537.20/1,030,000.20 = 213,270.40/x - Step 3: Cross multiply
686,537.20x = 1,030,000.20 × 213,270.40 - Step 4: Simplify right side
686,537.20x = 219,668,554,654.08 - Step 5: Solve for x
x = 219,668,554,654.08/686,537.20 - Step 6: Final answer
x = 319,965.99
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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.