Finding the Fourth Proportional to 318,009.36, 438,879.84 and 216,260.52
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Solution
The fourth proportional to 318,009.36, 438,879.84 and 216,260.52 is: 298,457.83
Step by Step Solution
- Step 1: Write the proportion equation
318,009.36 : 438,879.84 = 216,260.52 : x - Step 2: Convert to fraction form
318,009.36/438,879.84 = 216,260.52/x - Step 3: Cross multiply
318,009.36x = 438,879.84 × 216,260.52 - Step 4: Simplify right side
318,009.36x = 94,912,382,415.92 - Step 5: Solve for x
x = 94,912,382,415.92/318,009.36 - Step 6: Final answer
x = 298,457.83
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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.