Finding the Fourth Proportional to 211,638.84, 317,438.82 and 71,398.68
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Solution
The fourth proportional to 211,638.84, 317,438.82 and 71,398.68 is: 107,091.46
Step by Step Solution
- Step 1: Write the proportion equation
211,638.84 : 317,438.82 = 71,398.68 : x - Step 2: Convert to fraction form
211,638.84/317,438.82 = 71,398.68/x - Step 3: Cross multiply
211,638.84x = 317,438.82 × 71,398.68 - Step 4: Simplify right side
211,638.84x = 22,664,712,728.76 - Step 5: Solve for x
x = 22,664,712,728.76/211,638.84 - Step 6: Final answer
x = 107,091.46
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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.