Finding the Fourth Proportional to 318,308.36, 477,462.63 and 81,650.99
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Solution
The fourth proportional to 318,308.36, 477,462.63 and 81,650.99 is: 122,476.50
Step by Step Solution
- Step 1: Write the proportion equation
318,308.36 : 477,462.63 = 81,650.99 : x - Step 2: Convert to fraction form
318,308.36/477,462.63 = 81,650.99/x - Step 3: Cross multiply
318,308.36x = 477,462.63 × 81,650.99 - Step 4: Simplify right side
318,308.36x = 38,985,294,040.19 - Step 5: Solve for x
x = 38,985,294,040.19/318,308.36 - Step 6: Final answer
x = 122,476.50
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1.5x scale
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.