Finding the Fourth Proportional to 421,398.99, 631,966.73 and 140,850.63
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Solution
The fourth proportional to 421,398.99, 631,966.73 and 140,850.63 is: 211,231.90
Step by Step Solution
- Step 1: Write the proportion equation
421,398.99 : 631,966.73 = 140,850.63 : x - Step 2: Convert to fraction form
421,398.99/631,966.73 = 140,850.63/x - Step 3: Cross multiply
421,398.99x = 631,966.73 × 140,850.63 - Step 4: Simplify right side
421,398.99x = 89,012,911,355.29 - Step 5: Solve for x
x = 89,012,911,355.29/421,398.99 - Step 6: Final answer
x = 211,231.90
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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.