Finding the Fourth Proportional to 621,817.20, 932,725.80 and 201,135.60
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Solution
The fourth proportional to 621,817.20, 932,725.80 and 201,135.60 is: 301,703.40
Step by Step Solution
- Step 1: Write the proportion equation
621,817.20 : 932,725.80 = 201,135.60 : x - Step 2: Convert to fraction form
621,817.20/932,725.80 = 201,135.60/x - Step 3: Cross multiply
621,817.20x = 932,725.80 × 201,135.60 - Step 4: Simplify right side
621,817.20x = 187,604,363,418.48 - Step 5: Solve for x
x = 187,604,363,418.48/621,817.20 - Step 6: Final answer
x = 301,703.40
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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.