Finding the Fourth Proportional to 306,357.48, 422,811.30 and 172,221.48
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Solution
The fourth proportional to 306,357.48, 422,811.30 and 172,221.48 is: 237,686.99
Step by Step Solution
- Step 1: Write the proportion equation
306,357.48 : 422,811.30 = 172,221.48 : x - Step 2: Convert to fraction form
306,357.48/422,811.30 = 172,221.48/x - Step 3: Cross multiply
306,357.48x = 422,811.30 × 172,221.48 - Step 4: Simplify right side
306,357.48x = 72,817,187,846.72 - Step 5: Solve for x
x = 72,817,187,846.72/306,357.48 - Step 6: Final answer
x = 237,686.99
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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.