Finding the Fourth Proportional to 427,257.40, 640,943.70 and 146,860.60
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Solution
The fourth proportional to 427,257.40, 640,943.70 and 146,860.60 is: 220,310.70
Step by Step Solution
- Step 1: Write the proportion equation
427,257.40 : 640,943.70 = 146,860.60 : x - Step 2: Convert to fraction form
427,257.40/640,943.70 = 146,860.60/x - Step 3: Cross multiply
427,257.40x = 640,943.70 × 146,860.60 - Step 4: Simplify right side
427,257.40x = 94,129,376,348.22 - Step 5: Solve for x
x = 94,129,376,348.22/427,257.40 - Step 6: Final answer
x = 220,310.70
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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.