Finding the Fourth Proportional to 281,303.60, 421,968.99 and 91,763.60
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Solution
The fourth proportional to 281,303.60, 421,968.99 and 91,763.60 is: 137,649.83
Step by Step Solution
- Step 1: Write the proportion equation
281,303.60 : 421,968.99 = 91,763.60 : x - Step 2: Convert to fraction form
281,303.60/421,968.99 = 91,763.60/x - Step 3: Cross multiply
281,303.60x = 421,968.99 × 91,763.60 - Step 4: Simplify right side
281,303.60x = 38,721,391,500.92 - Step 5: Solve for x
x = 38,721,391,500.92/281,303.60 - Step 6: Final answer
x = 137,649.83
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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.