Finding the Fourth Proportional to 253,229.05, 349,563.69 and 157,782.90
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Solution
The fourth proportional to 253,229.05, 349,563.69 and 157,782.90 is: 217,807.45
Step by Step Solution
- Step 1: Write the proportion equation
253,229.05 : 349,563.69 = 157,782.90 : x - Step 2: Convert to fraction form
253,229.05/349,563.69 = 157,782.90/x - Step 3: Cross multiply
253,229.05x = 349,563.69 × 157,782.90 - Step 4: Simplify right side
253,229.05x = 55,155,171,953.99 - Step 5: Solve for x
x = 55,155,171,953.99/253,229.05 - Step 6: Final answer
x = 217,807.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.