Finding the Fourth Proportional to 387,950,928.12, 535,364,692.02 and 211,740,186.84
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Solution
The fourth proportional to 387,950,928.12, 535,364,692.02 and 211,740,186.84 is: 292,197,315.95
Step by Step Solution
- Step 1: Write the proportion equation
387,950,928.12 : 535,364,692.02 = 211,740,186.84 : x - Step 2: Convert to fraction form
387,950,928.12/535,364,692.02 = 211,740,186.84/x - Step 3: Cross multiply
387,950,928.12x = 535,364,692.02 × 211,740,186.84 - Step 4: Simplify right side
387,950,928.12x = 113,358,219,915,853,856 - Step 5: Solve for x
x = 113,358,219,915,853,856/387,950,928.12 - Step 6: Final answer
x = 292,197,315.95
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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.