Finding the Fourth Proportional to 201,715.30, 302,572.95 and 138,729.70
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Solution
The fourth proportional to 201,715.30, 302,572.95 and 138,729.70 is: 208,094.55
Step by Step Solution
- Step 1: Write the proportion equation
201,715.30 : 302,572.95 = 138,729.70 : x - Step 2: Convert to fraction form
201,715.30/302,572.95 = 138,729.70/x - Step 3: Cross multiply
201,715.30x = 302,572.95 × 138,729.70 - Step 4: Simplify right side
201,715.30x = 41,975,854,581.62 - Step 5: Solve for x
x = 41,975,854,581.62/201,715.30 - Step 6: Final answer
x = 208,094.55
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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.