Finding the Fourth Proportional to 306,057.80, 422,349.65 and 168,237.18
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Solution
The fourth proportional to 306,057.80, 422,349.65 and 168,237.18 is: 232,161.75
Step by Step Solution
- Step 1: Write the proportion equation
306,057.80 : 422,349.65 = 168,237.18 : x - Step 2: Convert to fraction form
306,057.80/422,349.65 = 168,237.18/x - Step 3: Cross multiply
306,057.80x = 422,349.65 × 168,237.18 - Step 4: Simplify right side
306,057.80x = 71,054,913,248.80 - Step 5: Solve for x
x = 71,054,913,248.80/306,057.80 - Step 6: Final answer
x = 232,161.75
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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.