Finding the Fourth Proportional to 422,472.20, 633,749.70 and 122,955.80
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Solution
The fourth proportional to 422,472.20, 633,749.70 and 122,955.80 is: 184,445.75
Step by Step Solution
- Step 1: Write the proportion equation
422,472.20 : 633,749.70 = 122,955.80 : x - Step 2: Convert to fraction form
422,472.20/633,749.70 = 122,955.80/x - Step 3: Cross multiply
422,472.20x = 633,749.70 × 122,955.80 - Step 4: Simplify right side
422,472.20x = 77,923,201,363.26 - Step 5: Solve for x
x = 77,923,201,363.26/422,472.20 - Step 6: Final answer
x = 184,445.75
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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.