Finding the Fourth Proportional to 280,270.99, 386,786.57 and 157,805.53
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Solution
The fourth proportional to 280,270.99, 386,786.57 and 157,805.53 is: 217,778.73
Step by Step Solution
- Step 1: Write the proportion equation
280,270.99 : 386,786.57 = 157,805.53 : x - Step 2: Convert to fraction form
280,270.99/386,786.57 = 157,805.53/x - Step 3: Cross multiply
280,270.99x = 386,786.57 × 157,805.53 - Step 4: Simplify right side
280,270.99x = 61,037,059,675.73 - Step 5: Solve for x
x = 61,037,059,675.73/280,270.99 - Step 6: Final answer
x = 217,778.73
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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.