Finding the Fourth Proportional to 279,890.68, 386,234.56 and 159,015.19
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Solution
The fourth proportional to 279,890.68, 386,234.56 and 159,015.19 is: 219,432.68
Step by Step Solution
- Step 1: Write the proportion equation
279,890.68 : 386,234.56 = 159,015.19 : x - Step 2: Convert to fraction form
279,890.68/386,234.56 = 159,015.19/x - Step 3: Cross multiply
279,890.68x = 386,234.56 × 159,015.19 - Step 4: Simplify right side
279,890.68x = 61,417,161,176.15 - Step 5: Solve for x
x = 61,417,161,176.15/279,890.68 - Step 6: Final answer
x = 219,432.68
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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.