Finding the Fourth Proportional to 324,138.60, 486,645.30 and 257,653.80
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Solution
The fourth proportional to 324,138.60, 486,645.30 and 257,653.80 is: 386,828.38
Step by Step Solution
- Step 1: Write the proportion equation
324,138.60 : 486,645.30 = 257,653.80 : x - Step 2: Convert to fraction form
324,138.60/486,645.30 = 257,653.80/x - Step 3: Cross multiply
324,138.60x = 486,645.30 × 257,653.80 - Step 4: Simplify right side
324,138.60x = 125,386,010,797.14 - Step 5: Solve for x
x = 125,386,010,797.14/324,138.60 - Step 6: Final answer
x = 386,828.38
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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.