Finding the Fourth Proportional to 398,828.24, 550,586.15 and 307,980.26
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Solution
The fourth proportional to 398,828.24, 550,586.15 and 307,980.26 is: 425,169.66
Step by Step Solution
- Step 1: Write the proportion equation
398,828.24 : 550,586.15 = 307,980.26 : x - Step 2: Convert to fraction form
398,828.24/550,586.15 = 307,980.26/x - Step 3: Cross multiply
398,828.24x = 550,586.15 × 307,980.26 - Step 4: Simplify right side
398,828.24x = 169,569,665,629.40 - Step 5: Solve for x
x = 169,569,665,629.40/398,828.24 - Step 6: Final answer
x = 425,169.66
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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.