Finding the Fourth Proportional to 318,631.80, 477,947.70 and 97,015.80
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Solution
The fourth proportional to 318,631.80, 477,947.70 and 97,015.80 is: 145,523.70
Step by Step Solution
- Step 1: Write the proportion equation
318,631.80 : 477,947.70 = 97,015.80 : x - Step 2: Convert to fraction form
318,631.80/477,947.70 = 97,015.80/x - Step 3: Cross multiply
318,631.80x = 477,947.70 × 97,015.80 - Step 4: Simplify right side
318,631.80x = 46,368,478,473.66 - Step 5: Solve for x
x = 46,368,478,473.66/318,631.80 - Step 6: Final answer
x = 145,523.70
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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.