Finding the Fourth Proportional to 378,972.17, 522,967.88 and 209,202.65
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Solution
The fourth proportional to 378,972.17, 522,967.88 and 209,202.65 is: 288,692.09
Step by Step Solution
- Step 1: Write the proportion equation
378,972.17 : 522,967.88 = 209,202.65 : x - Step 2: Convert to fraction form
378,972.17/522,967.88 = 209,202.65/x - Step 3: Cross multiply
378,972.17x = 522,967.88 × 209,202.65 - Step 4: Simplify right side
378,972.17x = 109,406,266,360.88 - Step 5: Solve for x
x = 109,406,266,360.88/378,972.17 - Step 6: Final answer
x = 288,692.09
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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.