Finding the Fourth Proportional to 413,120.25, 619,692.93 and 128,821.05
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Solution
The fourth proportional to 413,120.25, 619,692.93 and 128,821.05 is: 193,235.49
Step by Step Solution
- Step 1: Write the proportion equation
413,120.25 : 619,692.93 = 128,821.05 : x - Step 2: Convert to fraction form
413,120.25/619,692.93 = 128,821.05/x - Step 3: Cross multiply
413,120.25x = 619,692.93 × 128,821.05 - Step 4: Simplify right side
413,120.25x = 79,829,493,920.18 - Step 5: Solve for x
x = 79,829,493,920.18/413,120.25 - Step 6: Final answer
x = 193,235.49
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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.