Finding the Fourth Proportional to 283,441.62, 391,144.74 and 156,129.06
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Solution
The fourth proportional to 283,441.62, 391,144.74 and 156,129.06 is: 215,455.52
Step by Step Solution
- Step 1: Write the proportion equation
283,441.62 : 391,144.74 = 156,129.06 : x - Step 2: Convert to fraction form
283,441.62/391,144.74 = 156,129.06/x - Step 3: Cross multiply
283,441.62x = 391,144.74 × 156,129.06 - Step 4: Simplify right side
283,441.62x = 61,069,060,580.14 - Step 5: Solve for x
x = 61,069,060,580.14/283,441.62 - Step 6: Final answer
x = 215,455.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.