Finding the Fourth Proportional to 260,998.20, 391,497.30 and 74,009.70
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Solution
The fourth proportional to 260,998.20, 391,497.30 and 74,009.70 is: 111,014.55
Step by Step Solution
- Step 1: Write the proportion equation
260,998.20 : 391,497.30 = 74,009.70 : x - Step 2: Convert to fraction form
260,998.20/391,497.30 = 74,009.70/x - Step 3: Cross multiply
260,998.20x = 391,497.30 × 74,009.70 - Step 4: Simplify right side
260,998.20x = 28,974,597,723.81 - Step 5: Solve for x
x = 28,974,597,723.81/260,998.20 - Step 6: Final answer
x = 111,014.55
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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.