Finding the Fourth Proportional to 280,456.40, 420,830.40 and 122,700.80
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Solution
The fourth proportional to 280,456.40, 420,830.40 and 122,700.80 is: 184,114.99
Step by Step Solution
- Step 1: Write the proportion equation
280,456.40 : 420,830.40 = 122,700.80 : x - Step 2: Convert to fraction form
280,456.40/420,830.40 = 122,700.80/x - Step 3: Cross multiply
280,456.40x = 420,830.40 × 122,700.80 - Step 4: Simplify right side
280,456.40x = 51,636,226,744.32 - Step 5: Solve for x
x = 51,636,226,744.32/280,456.40 - Step 6: Final answer
x = 184,114.99
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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.