Finding the Fourth Proportional to 318,534.66, 477,469.84 and 129,125.76
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Solution
The fourth proportional to 318,534.66, 477,469.84 and 129,125.76 is: 193,553.99
Step by Step Solution
- Step 1: Write the proportion equation
318,534.66 : 477,469.84 = 129,125.76 : x - Step 2: Convert to fraction form
318,534.66/477,469.84 = 129,125.76/x - Step 3: Cross multiply
318,534.66x = 477,469.84 × 129,125.76 - Step 4: Simplify right side
318,534.66x = 61,653,655,967.08 - Step 5: Solve for x
x = 61,653,655,967.08/318,534.66 - Step 6: Final answer
x = 193,553.99
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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.