Finding the Fourth Proportional to 391,124.20, 539,751.62 and 212,276.20
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Solution
The fourth proportional to 391,124.20, 539,751.62 and 212,276.20 is: 292,941.28
Step by Step Solution
- Step 1: Write the proportion equation
391,124.20 : 539,751.62 = 212,276.20 : x - Step 2: Convert to fraction form
391,124.20/539,751.62 = 212,276.20/x - Step 3: Cross multiply
391,124.20x = 539,751.62 × 212,276.20 - Step 4: Simplify right side
391,124.20x = 114,576,422,837.44 - Step 5: Solve for x
x = 114,576,422,837.44/391,124.20 - Step 6: Final answer
x = 292,941.28
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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.