Finding the Fourth Proportional to 286,070.97, 394,782.95 and 157,021.52
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Solution
The fourth proportional to 286,070.97, 394,782.95 and 157,021.52 is: 216,692.45
Step by Step Solution
- Step 1: Write the proportion equation
286,070.97 : 394,782.95 = 157,021.52 : x - Step 2: Convert to fraction form
286,070.97/394,782.95 = 157,021.52/x - Step 3: Cross multiply
286,070.97x = 394,782.95 × 157,021.52 - Step 4: Simplify right side
286,070.97x = 61,989,418,879.08 - Step 5: Solve for x
x = 61,989,418,879.08/286,070.97 - Step 6: Final answer
x = 216,692.45
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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.