Finding the Fourth Proportional to 398,678.68, 550,187.67 and 243,655.08
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Solution
The fourth proportional to 398,678.68, 550,187.67 and 243,655.08 is: 336,250.79
Step by Step Solution
- Step 1: Write the proportion equation
398,678.68 : 550,187.67 = 243,655.08 : x - Step 2: Convert to fraction form
398,678.68/550,187.67 = 243,655.08/x - Step 3: Cross multiply
398,678.68x = 550,187.67 × 243,655.08 - Step 4: Simplify right side
398,678.68x = 134,056,020,748.86 - Step 5: Solve for x
x = 134,056,020,748.86/398,678.68 - Step 6: Final answer
x = 336,250.79
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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.