Finding the Fourth Proportional to 279,775.94, 385,629.63 and 197,998.70
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Solution
The fourth proportional to 279,775.94, 385,629.63 and 197,998.70 is: 272,911.84
Step by Step Solution
- Step 1: Write the proportion equation
279,775.94 : 385,629.63 = 197,998.70 : x - Step 2: Convert to fraction form
279,775.94/385,629.63 = 197,998.70/x - Step 3: Cross multiply
279,775.94x = 385,629.63 × 197,998.70 - Step 4: Simplify right side
279,775.94x = 76,354,165,421.48 - Step 5: Solve for x
x = 76,354,165,421.48/279,775.94 - Step 6: Final answer
x = 272,911.84
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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.