Finding the Fourth Proportional to 306,342.93, 422,749.49 and 172,206.93
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Solution
The fourth proportional to 306,342.93, 422,749.49 and 172,206.93 is: 237,643.45
Step by Step Solution
- Step 1: Write the proportion equation
306,342.93 : 422,749.49 = 172,206.93 : x - Step 2: Convert to fraction form
306,342.93/422,749.49 = 172,206.93/x - Step 3: Cross multiply
306,342.93x = 422,749.49 × 172,206.93 - Step 4: Simplify right side
306,342.93x = 72,800,390,970.93 - Step 5: Solve for x
x = 72,800,390,970.93/306,342.93 - Step 6: Final answer
x = 237,643.45
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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.