Finding the Fourth Proportional to 280,692.36, 387,346.86 and 153,367.79
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Solution
The fourth proportional to 280,692.36, 387,346.86 and 153,367.79 is: 211,642.85
Step by Step Solution
- Step 1: Write the proportion equation
280,692.36 : 387,346.86 = 153,367.79 : x - Step 2: Convert to fraction form
280,692.36/387,346.86 = 153,367.79/x - Step 3: Cross multiply
280,692.36x = 387,346.86 × 153,367.79 - Step 4: Simplify right side
280,692.36x = 59,406,529,944.91 - Step 5: Solve for x
x = 59,406,529,944.91/280,692.36 - Step 6: Final answer
x = 211,642.85
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1.5x scale
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.