Finding the Fourth Proportional to 280,246,965.40, 386,741,652.06 and 156,492,158.68
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Solution
The fourth proportional to 280,246,965.40, 386,741,652.06 and 156,492,158.68 is: 215,959,647.93
Step by Step Solution
- Step 1: Write the proportion equation
280,246,965.40 : 386,741,652.06 = 156,492,158.68 : x - Step 2: Convert to fraction form
280,246,965.40/386,741,652.06 = 156,492,158.68/x - Step 3: Cross multiply
280,246,965.40x = 386,741,652.06 × 156,492,158.68 - Step 4: Simplify right side
280,246,965.40x = 60,522,035,982,338,872 - Step 5: Solve for x
x = 60,522,035,982,338,872/280,246,965.40 - Step 6: Final answer
x = 215,959,647.93
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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.