Finding the Fourth Proportional to 425,941.76, 638,844.91 and 141,608.68
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Solution
The fourth proportional to 425,941.76, 638,844.91 and 141,608.68 is: 212,390.50
Step by Step Solution
- Step 1: Write the proportion equation
425,941.76 : 638,844.91 = 141,608.68 : x - Step 2: Convert to fraction form
425,941.76/638,844.91 = 141,608.68/x - Step 3: Cross multiply
425,941.76x = 638,844.91 × 141,608.68 - Step 4: Simplify right side
425,941.76x = 90,465,984,429.82 - Step 5: Solve for x
x = 90,465,984,429.82/425,941.76 - Step 6: Final answer
x = 212,390.50
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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.