Finding the Fourth Proportional to 402,648.40, 555,655.14 and 221,363.41
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Solution
The fourth proportional to 402,648.40, 555,655.14 and 221,363.41 is: 305,481.70
Step by Step Solution
- Step 1: Write the proportion equation
402,648.40 : 555,655.14 = 221,363.41 : x - Step 2: Convert to fraction form
402,648.40/555,655.14 = 221,363.41/x - Step 3: Cross multiply
402,648.40x = 555,655.14 × 221,363.41 - Step 4: Simplify right side
402,648.40x = 123,001,716,849.73 - Step 5: Solve for x
x = 123,001,716,849.73/402,648.40 - Step 6: Final answer
x = 305,481.70
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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.