Finding the Fourth Proportional to 283,985.19, 391,893.26 and 156,660.75
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Solution
The fourth proportional to 283,985.19, 391,893.26 and 156,660.75 is: 216,188.36
Step by Step Solution
- Step 1: Write the proportion equation
283,985.19 : 391,893.26 = 156,660.75 : x - Step 2: Convert to fraction form
283,985.19/391,893.26 = 156,660.75/x - Step 3: Cross multiply
283,985.19x = 391,893.26 × 156,660.75 - Step 4: Simplify right side
283,985.19x = 61,394,291,248.24 - Step 5: Solve for x
x = 61,394,291,248.24/283,985.19 - Step 6: Final answer
x = 216,188.36
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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.