Finding the Fourth Proportional to 157,643.20, 236,486.40 and 52,451.20
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Solution
The fourth proportional to 157,643.20, 236,486.40 and 52,451.20 is: 78,683.99
Step by Step Solution
- Step 1: Write the proportion equation
157,643.20 : 236,486.40 = 52,451.20 : x - Step 2: Convert to fraction form
157,643.20/236,486.40 = 52,451.20/x - Step 3: Cross multiply
157,643.20x = 236,486.40 × 52,451.20 - Step 4: Simplify right side
157,643.20x = 12,403,995,463.68 - Step 5: Solve for x
x = 12,403,995,463.68/157,643.20 - Step 6: Final answer
x = 78,683.99
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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.