Finding the Fourth Proportional to 312,783.36, 431,840.64 and 205,543.68
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Solution
The fourth proportional to 312,783.36, 431,840.64 and 205,543.68 is: 283,781.45
Step by Step Solution
- Step 1: Write the proportion equation
312,783.36 : 431,840.64 = 205,543.68 : x - Step 2: Convert to fraction form
312,783.36/431,840.64 = 205,543.68/x - Step 3: Cross multiply
312,783.36x = 431,840.64 × 205,543.68 - Step 4: Simplify right side
312,783.36x = 88,762,114,319.16 - Step 5: Solve for x
x = 88,762,114,319.16/312,783.36 - Step 6: Final answer
x = 283,781.45
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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.