Finding the Fourth Proportional to 425,622.70, 638,142.45 and 201,090.70
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Solution
The fourth proportional to 425,622.70, 638,142.45 and 201,090.70 is: 301,498.28
Step by Step Solution
- Step 1: Write the proportion equation
425,622.70 : 638,142.45 = 201,090.70 : x - Step 2: Convert to fraction form
425,622.70/638,142.45 = 201,090.70/x - Step 3: Cross multiply
425,622.70x = 638,142.45 × 201,090.70 - Step 4: Simplify right side
425,622.70x = 128,324,511,970.22 - Step 5: Solve for x
x = 128,324,511,970.22/425,622.70 - Step 6: Final answer
x = 301,498.28
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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.