Finding the Fourth Proportional to 285,418.32, 428,393.16 and 145,281.84
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Solution
The fourth proportional to 285,418.32, 428,393.16 and 145,281.84 is: 218,057.99
Step by Step Solution
- Step 1: Write the proportion equation
285,418.32 : 428,393.16 = 145,281.84 : x - Step 2: Convert to fraction form
285,418.32/428,393.16 = 145,281.84/x - Step 3: Cross multiply
285,418.32x = 428,393.16 × 145,281.84 - Step 4: Simplify right side
285,418.32x = 62,237,746,528.21 - Step 5: Solve for x
x = 62,237,746,528.21/285,418.32 - Step 6: Final answer
x = 218,057.99
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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.