Finding the Fourth Proportional to 354,895.68, 489,649.92 and 227,349.12
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Solution
The fourth proportional to 354,895.68, 489,649.92 and 227,349.12 is: 313,673.81
Step by Step Solution
- Step 1: Write the proportion equation
354,895.68 : 489,649.92 = 227,349.12 : x - Step 2: Convert to fraction form
354,895.68/489,649.92 = 227,349.12/x - Step 3: Cross multiply
354,895.68x = 489,649.92 × 227,349.12 - Step 4: Simplify right side
354,895.68x = 111,321,478,420.07 - Step 5: Solve for x
x = 111,321,478,420.07/354,895.68 - Step 6: Final answer
x = 313,673.81
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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.