Finding the Fourth Proportional to 279,563,778.55, 419,345,667.69 and 85,475,193.99
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Solution
The fourth proportional to 279,563,778.55, 419,345,667.69 and 85,475,193.99 is: 128,212,790.94
Step by Step Solution
- Step 1: Write the proportion equation
279,563,778.55 : 419,345,667.69 = 85,475,193.99 : x - Step 2: Convert to fraction form
279,563,778.55/419,345,667.69 = 85,475,193.99/x - Step 3: Cross multiply
279,563,778.55x = 419,345,667.69 × 85,475,193.99 - Step 4: Simplify right side
279,563,778.55x = 35,843,652,294,668,824 - Step 5: Solve for x
x = 35,843,652,294,668,824/279,563,778.55 - Step 6: Final answer
x = 128,212,790.94
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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.