Finding the Fourth Proportional to 315,720.08, 473,755.08 and 128,717.12
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Solution
The fourth proportional to 315,720.08, 473,755.08 and 128,717.12 is: 193,147.01
Step by Step Solution
- Step 1: Write the proportion equation
315,720.08 : 473,755.08 = 128,717.12 : x - Step 2: Convert to fraction form
315,720.08/473,755.08 = 128,717.12/x - Step 3: Cross multiply
315,720.08x = 473,755.08 × 128,717.12 - Step 4: Simplify right side
315,720.08x = 60,980,389,482.97 - Step 5: Solve for x
x = 60,980,389,482.97/315,720.08 - Step 6: Final answer
x = 193,147.01
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.