Finding the Fourth Proportional to 397,976.18, 549,216.99 and 216,698.05
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Solution
The fourth proportional to 397,976.18, 549,216.99 and 216,698.05 is: 299,048.68
Step by Step Solution
- Step 1: Write the proportion equation
397,976.18 : 549,216.99 = 216,698.05 : x - Step 2: Convert to fraction form
397,976.18/549,216.99 = 216,698.05/x - Step 3: Cross multiply
397,976.18x = 549,216.99 × 216,698.05 - Step 4: Simplify right side
397,976.18x = 119,014,250,759.87 - Step 5: Solve for x
x = 119,014,250,759.87/397,976.18 - Step 6: Final answer
x = 299,048.68
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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.