Finding the Fourth Proportional to 399,352.39, 550,169.74 and 278,273.99
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Solution
The fourth proportional to 399,352.39, 550,169.74 and 278,273.99 is: 383,365.50
Step by Step Solution
- Step 1: Write the proportion equation
399,352.39 : 550,169.74 = 278,273.99 : x - Step 2: Convert to fraction form
399,352.39/550,169.74 = 278,273.99/x - Step 3: Cross multiply
399,352.39x = 550,169.74 × 278,273.99 - Step 4: Simplify right side
399,352.39x = 153,097,928,727.06 - Step 5: Solve for x
x = 153,097,928,727.06/399,352.39 - Step 6: Final answer
x = 383,365.50
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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.