Finding the Fourth Proportional to 310,003.13, 427,789.74 and 172,190.99
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Solution
The fourth proportional to 310,003.13, 427,789.74 and 172,190.99 is: 237,615.47
Step by Step Solution
- Step 1: Write the proportion equation
310,003.13 : 427,789.74 = 172,190.99 : x - Step 2: Convert to fraction form
310,003.13/427,789.74 = 172,190.99/x - Step 3: Cross multiply
310,003.13x = 427,789.74 × 172,190.99 - Step 4: Simplify right side
310,003.13x = 73,661,538,842.44 - Step 5: Solve for x
x = 73,661,538,842.44/310,003.13 - Step 6: Final answer
x = 237,615.47
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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.