Finding the Fourth Proportional to 216,331.10, 298,115.16 and 155,787.35
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Solution
The fourth proportional to 216,331.10, 298,115.16 and 155,787.35 is: 214,682.82
Step by Step Solution
- Step 1: Write the proportion equation
216,331.10 : 298,115.16 = 155,787.35 : x - Step 2: Convert to fraction form
216,331.10/298,115.16 = 155,787.35/x - Step 3: Cross multiply
216,331.10x = 298,115.16 × 155,787.35 - Step 4: Simplify right side
216,331.10x = 46,442,570,771.23 - Step 5: Solve for x
x = 46,442,570,771.23/216,331.10 - Step 6: Final answer
x = 214,682.82
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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.