Finding the Fourth Proportional to 306,345.12, 422,753.91 and 168,521.09
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Solution
The fourth proportional to 306,345.12, 422,753.91 and 168,521.09 is: 232,557.80
Step by Step Solution
- Step 1: Write the proportion equation
306,345.12 : 422,753.91 = 168,521.09 : x - Step 2: Convert to fraction form
306,345.12/422,753.91 = 168,521.09/x - Step 3: Cross multiply
306,345.12x = 422,753.91 × 168,521.09 - Step 4: Simplify right side
306,345.12x = 71,242,947,601.19 - Step 5: Solve for x
x = 71,242,947,601.19/306,345.12 - Step 6: Final answer
x = 232,557.80
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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.