Finding the Fourth Proportional to 420,608.36, 580,472.66 and 239,327.92
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Solution
The fourth proportional to 420,608.36, 580,472.66 and 239,327.92 is: 330,291.38
Step by Step Solution
- Step 1: Write the proportion equation
420,608.36 : 580,472.66 = 239,327.92 : x - Step 2: Convert to fraction form
420,608.36/580,472.66 = 239,327.92/x - Step 3: Cross multiply
420,608.36x = 580,472.66 × 239,327.92 - Step 4: Simplify right side
420,608.36x = 138,923,314,334.67 - Step 5: Solve for x
x = 138,923,314,334.67/420,608.36 - Step 6: Final answer
x = 330,291.38
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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.