Finding the Fourth Proportional to 207,425.80, 286,313.70 and 135,692.20
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Solution
The fourth proportional to 207,425.80, 286,313.70 and 135,692.20 is: 187,298.47
Step by Step Solution
- Step 1: Write the proportion equation
207,425.80 : 286,313.70 = 135,692.20 : x - Step 2: Convert to fraction form
207,425.80/286,313.70 = 135,692.20/x - Step 3: Cross multiply
207,425.80x = 286,313.70 × 135,692.20 - Step 4: Simplify right side
207,425.80x = 38,850,535,843.14 - Step 5: Solve for x
x = 38,850,535,843.14/207,425.80 - Step 6: Final answer
x = 187,298.47
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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.