Finding the Fourth Proportional to 207,058.98, 310,982.16 and 128,720.64
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Solution
The fourth proportional to 207,058.98, 310,982.16 and 128,720.64 is: 193,325.70
Step by Step Solution
- Step 1: Write the proportion equation
207,058.98 : 310,982.16 = 128,720.64 : x - Step 2: Convert to fraction form
207,058.98/310,982.16 = 128,720.64/x - Step 3: Cross multiply
207,058.98x = 310,982.16 × 128,720.64 - Step 4: Simplify right side
207,058.98x = 40,029,822,663.78 - Step 5: Solve for x
x = 40,029,822,663.78/207,058.98 - Step 6: Final answer
x = 193,325.70
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1.5x scale
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.