Finding the Fourth Proportional to 391,316.30, 587,237.49 and 138,595.88
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Solution
The fourth proportional to 391,316.30, 587,237.49 and 138,595.88 is: 207,986.98
Step by Step Solution
- Step 1: Write the proportion equation
391,316.30 : 587,237.49 = 138,595.88 : x - Step 2: Convert to fraction form
391,316.30/587,237.49 = 138,595.88/x - Step 3: Cross multiply
391,316.30x = 587,237.49 × 138,595.88 - Step 4: Simplify right side
391,316.30x = 81,388,696,695.54 - Step 5: Solve for x
x = 81,388,696,695.54/391,316.30 - Step 6: Final answer
x = 207,986.98
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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.