Finding the Fourth Proportional to 289,115.11, 433,620.42 and 78,703.84
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Solution
The fourth proportional to 289,115.11, 433,620.42 and 78,703.84 is: 118,041.54
Step by Step Solution
- Step 1: Write the proportion equation
289,115.11 : 433,620.42 = 78,703.84 : x - Step 2: Convert to fraction form
289,115.11/433,620.42 = 78,703.84/x - Step 3: Cross multiply
289,115.11x = 433,620.42 × 78,703.84 - Step 4: Simplify right side
289,115.11x = 34,127,592,156.41 - Step 5: Solve for x
x = 34,127,592,156.41/289,115.11 - Step 6: Final answer
x = 118,041.54
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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.