Finding the Fourth Proportional to 425,637.70, 638,164.95 and 201,105.70
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Solution
The fourth proportional to 425,637.70, 638,164.95 and 201,105.70 is: 301,520.77
Step by Step Solution
- Step 1: Write the proportion equation
425,637.70 : 638,164.95 = 201,105.70 : x - Step 2: Convert to fraction form
425,637.70/638,164.95 = 201,105.70/x - Step 3: Cross multiply
425,637.70x = 638,164.95 × 201,105.70 - Step 4: Simplify right side
425,637.70x = 128,338,608,985.22 - Step 5: Solve for x
x = 128,338,608,985.22/425,637.70 - Step 6: Final answer
x = 301,520.77
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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.