Finding the Fourth Proportional to 427,039.08, 640,585.04 and 142,755.21
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Solution
The fourth proportional to 427,039.08, 640,585.04 and 142,755.21 is: 214,141.65
Step by Step Solution
- Step 1: Write the proportion equation
427,039.08 : 640,585.04 = 142,755.21 : x - Step 2: Convert to fraction form
427,039.08/640,585.04 = 142,755.21/x - Step 3: Cross multiply
427,039.08x = 640,585.04 × 142,755.21 - Step 4: Simplify right side
427,039.08x = 91,446,851,908.06 - Step 5: Solve for x
x = 91,446,851,908.06/427,039.08 - Step 6: Final answer
x = 214,141.65
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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.