Finding the Fourth Proportional to 280,525.16, 420,787.80 and 70,163.12
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Solution
The fourth proportional to 280,525.16, 420,787.80 and 70,163.12 is: 105,244.70
Step by Step Solution
- Step 1: Write the proportion equation
280,525.16 : 420,787.80 = 70,163.12 : x - Step 2: Convert to fraction form
280,525.16/420,787.80 = 70,163.12/x - Step 3: Cross multiply
280,525.16x = 420,787.80 × 70,163.12 - Step 4: Simplify right side
280,525.16x = 29,523,784,905.94 - Step 5: Solve for x
x = 29,523,784,905.94/280,525.16 - Step 6: Final answer
x = 105,244.70
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1.5x scale
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.