Finding the Fourth Proportional to 354,987.65, 489,902.87 and 193,857.68
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Solution
The fourth proportional to 354,987.65, 489,902.87 and 193,857.68 is: 267,534.47
Step by Step Solution
- Step 1: Write the proportion equation
354,987.65 : 489,902.87 = 193,857.68 : x - Step 2: Convert to fraction form
354,987.65/489,902.87 = 193,857.68/x - Step 3: Cross multiply
354,987.65x = 489,902.87 × 193,857.68 - Step 4: Simplify right side
354,987.65x = 94,971,433,803.54 - Step 5: Solve for x
x = 94,971,433,803.54/354,987.65 - Step 6: Final answer
x = 267,534.47
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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.