Finding the Fourth Proportional to 398,911.68, 550,511.99 and 217,633.59
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Solution
The fourth proportional to 398,911.68, 550,511.99 and 217,633.59 is: 300,341.92
Step by Step Solution
- Step 1: Write the proportion equation
398,911.68 : 550,511.99 = 217,633.59 : x - Step 2: Convert to fraction form
398,911.68/550,511.99 = 217,633.59/x - Step 3: Cross multiply
398,911.68x = 550,511.99 × 217,633.59 - Step 4: Simplify right side
398,911.68x = 119,809,899,633.58 - Step 5: Solve for x
x = 119,809,899,633.58/398,911.68 - Step 6: Final answer
x = 300,341.92
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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.