Finding the Fourth Proportional to 161,690.74, 221,517.37 and 155,630.30
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Solution
The fourth proportional to 161,690.74, 221,517.37 and 155,630.30 is: 213,214.53
Step by Step Solution
- Step 1: Write the proportion equation
161,690.74 : 221,517.37 = 155,630.30 : x - Step 2: Convert to fraction form
161,690.74/221,517.37 = 155,630.30/x - Step 3: Cross multiply
161,690.74x = 221,517.37 × 155,630.30 - Step 4: Simplify right side
161,690.74x = 34,474,814,748.31 - Step 5: Solve for x
x = 34,474,814,748.31/161,690.74 - Step 6: Final answer
x = 213,214.53
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.