Finding the Fourth Proportional to 279,563,779.05, 419,345,668.44 and 85,475,194.49
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Solution
The fourth proportional to 279,563,779.05, 419,345,668.44 and 85,475,194.49 is: 128,212,791.69
Step by Step Solution
- Step 1: Write the proportion equation
279,563,779.05 : 419,345,668.44 = 85,475,194.49 : x - Step 2: Convert to fraction form
279,563,779.05/419,345,668.44 = 85,475,194.49/x - Step 3: Cross multiply
279,563,779.05x = 419,345,668.44 × 85,475,194.49 - Step 4: Simplify right side
279,563,779.05x = 35,843,652,566,351,328 - Step 5: Solve for x
x = 35,843,652,566,351,328/279,563,779.05 - Step 6: Final answer
x = 128,212,791.69
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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.