Finding the Fourth Proportional to 449,349.12, 620,089.92 and 248,140.80
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Solution
The fourth proportional to 449,349.12, 620,089.92 and 248,140.80 is: 342,427.75
Step by Step Solution
- Step 1: Write the proportion equation
449,349.12 : 620,089.92 = 248,140.80 : x - Step 2: Convert to fraction form
449,349.12/620,089.92 = 248,140.80/x - Step 3: Cross multiply
449,349.12x = 620,089.92 × 248,140.80 - Step 4: Simplify right side
449,349.12x = 153,869,608,820.74 - Step 5: Solve for x
x = 153,869,608,820.74/449,349.12 - Step 6: Final answer
x = 342,427.75
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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.