Finding the Fourth Proportional to 270,649.20, 405,973.80 and 122,905.20
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Solution
The fourth proportional to 270,649.20, 405,973.80 and 122,905.20 is: 184,357.80
Step by Step Solution
- Step 1: Write the proportion equation
270,649.20 : 405,973.80 = 122,905.20 : x - Step 2: Convert to fraction form
270,649.20/405,973.80 = 122,905.20/x - Step 3: Cross multiply
270,649.20x = 405,973.80 × 122,905.20 - Step 4: Simplify right side
270,649.20x = 49,896,291,083.76 - Step 5: Solve for x
x = 49,896,291,083.76/270,649.20 - Step 6: Final answer
x = 184,357.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.