Finding the Fourth Proportional to 283,714.74, 391,553.94 and 211,970.21
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Solution
The fourth proportional to 283,714.74, 391,553.94 and 211,970.21 is: 292,539.50
Step by Step Solution
- Step 1: Write the proportion equation
283,714.74 : 391,553.94 = 211,970.21 : x - Step 2: Convert to fraction form
283,714.74/391,553.94 = 211,970.21/x - Step 3: Cross multiply
283,714.74x = 391,553.94 × 211,970.21 - Step 4: Simplify right side
283,714.74x = 82,997,768,930.36 - Step 5: Solve for x
x = 82,997,768,930.36/283,714.74 - Step 6: Final answer
x = 292,539.50
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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.