Finding the Fourth Proportional to 221,656.61, 305,893.68 and 131,090.21
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Solution
The fourth proportional to 221,656.61, 305,893.68 and 131,090.21 is: 180,908.95
Step by Step Solution
- Step 1: Write the proportion equation
221,656.61 : 305,893.68 = 131,090.21 : x - Step 2: Convert to fraction form
221,656.61/305,893.68 = 131,090.21/x - Step 3: Cross multiply
221,656.61x = 305,893.68 × 131,090.21 - Step 4: Simplify right side
221,656.61x = 40,099,665,874.92 - Step 5: Solve for x
x = 40,099,665,874.92/221,656.61 - Step 6: Final answer
x = 180,908.95
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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.