Finding the Fourth Proportional to 491,129.80, 677,752.32 and 276,269.80
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Solution
The fourth proportional to 491,129.80, 677,752.32 and 276,269.80 is: 381,248.50
Step by Step Solution
- Step 1: Write the proportion equation
491,129.80 : 677,752.32 = 276,269.80 : x - Step 2: Convert to fraction form
491,129.80/677,752.32 = 276,269.80/x - Step 3: Cross multiply
491,129.80x = 677,752.32 × 276,269.80 - Step 4: Simplify right side
491,129.80x = 187,242,497,895.94 - Step 5: Solve for x
x = 187,242,497,895.94/491,129.80 - Step 6: Final answer
x = 381,248.50
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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.