Finding the Fourth Proportional to 318,431.74, 477,631.97 and 118,736.50
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Solution
The fourth proportional to 318,431.74, 477,631.97 and 118,736.50 is: 178,098.92
Step by Step Solution
- Step 1: Write the proportion equation
318,431.74 : 477,631.97 = 118,736.50 : x - Step 2: Convert to fraction form
318,431.74/477,631.97 = 118,736.50/x - Step 3: Cross multiply
318,431.74x = 477,631.97 × 118,736.50 - Step 4: Simplify right side
318,431.74x = 56,712,348,405.91 - Step 5: Solve for x
x = 56,712,348,405.91/318,431.74 - Step 6: Final answer
x = 178,098.92
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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.