Finding the Fourth Proportional to 280,903.18, 421,396.79 and 103,396.68
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Solution
The fourth proportional to 280,903.18, 421,396.79 and 103,396.68 is: 155,110.49
Step by Step Solution
- Step 1: Write the proportion equation
280,903.18 : 421,396.79 = 103,396.68 : x - Step 2: Convert to fraction form
280,903.18/421,396.79 = 103,396.68/x - Step 3: Cross multiply
280,903.18x = 421,396.79 × 103,396.68 - Step 4: Simplify right side
280,903.18x = 43,571,029,048.66 - Step 5: Solve for x
x = 43,571,029,048.66/280,903.18 - Step 6: Final answer
x = 155,110.49
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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.