Finding the Fourth Proportional to 272,893.84, 407,421.97 and 208,515.05
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Solution
The fourth proportional to 272,893.84, 407,421.97 and 208,515.05 is: 311,306.45
Step by Step Solution
- Step 1: Write the proportion equation
272,893.84 : 407,421.97 = 208,515.05 : x - Step 2: Convert to fraction form
272,893.84/407,421.97 = 208,515.05/x - Step 3: Cross multiply
272,893.84x = 407,421.97 × 208,515.05 - Step 4: Simplify right side
272,893.84x = 84,953,612,445.65 - Step 5: Solve for x
x = 84,953,612,445.65/272,893.84 - Step 6: Final answer
x = 311,306.45
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.