Finding the Fourth Proportional to 299,853.68, 449,780.44 and 78,237.68
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Solution
The fourth proportional to 299,853.68, 449,780.44 and 78,237.68 is: 117,356.50
Step by Step Solution
- Step 1: Write the proportion equation
299,853.68 : 449,780.44 = 78,237.68 : x - Step 2: Convert to fraction form
299,853.68/449,780.44 = 78,237.68/x - Step 3: Cross multiply
299,853.68x = 449,780.44 × 78,237.68 - Step 4: Simplify right side
299,853.68x = 35,189,778,134.98 - Step 5: Solve for x
x = 35,189,778,134.98/299,853.68 - Step 6: Final answer
x = 117,356.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.