Finding the Fourth Proportional to 201,695.40, 302,543.10 and 138,709.80
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Solution
The fourth proportional to 201,695.40, 302,543.10 and 138,709.80 is: 208,064.70
Step by Step Solution
- Step 1: Write the proportion equation
201,695.40 : 302,543.10 = 138,709.80 : x - Step 2: Convert to fraction form
201,695.40/302,543.10 = 138,709.80/x - Step 3: Cross multiply
201,695.40x = 302,543.10 × 138,709.80 - Step 4: Simplify right side
201,695.40x = 41,965,692,892.38 - Step 5: Solve for x
x = 41,965,692,892.38/201,695.40 - Step 6: Final answer
x = 208,064.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.