Finding the Fourth Proportional to 224,615.56, 309,967.12 and 122,640.70
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Solution
The fourth proportional to 224,615.56, 309,967.12 and 122,640.70 is: 169,242.88
Step by Step Solution
- Step 1: Write the proportion equation
224,615.56 : 309,967.12 = 122,640.70 : x - Step 2: Convert to fraction form
224,615.56/309,967.12 = 122,640.70/x - Step 3: Cross multiply
224,615.56x = 309,967.12 × 122,640.70 - Step 4: Simplify right side
224,615.56x = 38,014,584,573.78 - Step 5: Solve for x
x = 38,014,584,573.78/224,615.56 - Step 6: Final answer
x = 169,242.88
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1.5x scale
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.