Finding the Fourth Proportional to 281,430.60, 388,373.58 and 154,105.08
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Solution
The fourth proportional to 281,430.60, 388,373.58 and 154,105.08 is: 212,664.66
Step by Step Solution
- Step 1: Write the proportion equation
281,430.60 : 388,373.58 = 154,105.08 : x - Step 2: Convert to fraction form
281,430.60/388,373.58 = 154,105.08/x - Step 3: Cross multiply
281,430.60x = 388,373.58 × 154,105.08 - Step 4: Simplify right side
281,430.60x = 59,850,341,615.79 - Step 5: Solve for x
x = 59,850,341,615.79/281,430.60 - Step 6: Final answer
x = 212,664.66
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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.