Finding the Fourth Proportional to 818,053.21, 1,227,135.87 and 278,089.75
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Solution
The fourth proportional to 818,053.21, 1,227,135.87 and 278,089.75 is: 417,153.68
Step by Step Solution
- Step 1: Write the proportion equation
818,053.21 : 1,227,135.87 = 278,089.75 : x - Step 2: Convert to fraction form
818,053.21/1,227,135.87 = 278,089.75/x - Step 3: Cross multiply
818,053.21x = 1,227,135.87 × 278,089.75 - Step 4: Simplify right side
818,053.21x = 341,253,907,304.33 - Step 5: Solve for x
x = 341,253,907,304.33/818,053.21 - Step 6: Final answer
x = 417,153.68
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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.