Finding the Fourth Proportional to 305,351.20, 458,122.80 and 147,584.80
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Solution
The fourth proportional to 305,351.20, 458,122.80 and 147,584.80 is: 221,423.60
Step by Step Solution
- Step 1: Write the proportion equation
305,351.20 : 458,122.80 = 147,584.80 : x - Step 2: Convert to fraction form
305,351.20/458,122.80 = 147,584.80/x - Step 3: Cross multiply
305,351.20x = 458,122.80 × 147,584.80 - Step 4: Simplify right side
305,351.20x = 67,611,961,813.44 - Step 5: Solve for x
x = 67,611,961,813.44/305,351.20 - Step 6: Final answer
x = 221,423.60
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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.