Finding the Fourth Proportional to 230,880.42, 318,611.87 and 128,907.44
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Solution
The fourth proportional to 230,880.42, 318,611.87 and 128,907.44 is: 177,890.53
Step by Step Solution
- Step 1: Write the proportion equation
230,880.42 : 318,611.87 = 128,907.44 : x - Step 2: Convert to fraction form
230,880.42/318,611.87 = 128,907.44/x - Step 3: Cross multiply
230,880.42x = 318,611.87 × 128,907.44 - Step 4: Simplify right side
230,880.42x = 41,071,440,439.32 - Step 5: Solve for x
x = 41,071,440,439.32/230,880.42 - Step 6: Final answer
x = 177,890.53
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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.