Finding the Fourth Proportional to 281,309.64, 388,211.58 and 153,997.08
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Solution
The fourth proportional to 281,309.64, 388,211.58 and 153,997.08 is: 212,518.31
Step by Step Solution
- Step 1: Write the proportion equation
281,309.64 : 388,211.58 = 153,997.08 : x - Step 2: Convert to fraction form
281,309.64/388,211.58 = 153,997.08/x - Step 3: Cross multiply
281,309.64x = 388,211.58 × 153,997.08 - Step 4: Simplify right side
281,309.64x = 59,783,449,742.19 - Step 5: Solve for x
x = 59,783,449,742.19/281,309.64 - Step 6: Final answer
x = 212,518.31
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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.