Finding the Fourth Proportional to 309,187.10, 426,581.34 and 173,202.68
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Solution
The fourth proportional to 309,187.10, 426,581.34 and 173,202.68 is: 238,965.44
Step by Step Solution
- Step 1: Write the proportion equation
309,187.10 : 426,581.34 = 173,202.68 : x - Step 2: Convert to fraction form
309,187.10/426,581.34 = 173,202.68/x - Step 3: Cross multiply
309,187.10x = 426,581.34 × 173,202.68 - Step 4: Simplify right side
309,187.10x = 73,885,029,193.08 - Step 5: Solve for x
x = 73,885,029,193.08/309,187.10 - Step 6: Final answer
x = 238,965.44
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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.