Finding the Fourth Proportional to 454,083.40, 681,125.10 and 138,539.80
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Solution
The fourth proportional to 454,083.40, 681,125.10 and 138,539.80 is: 207,809.70
Step by Step Solution
- Step 1: Write the proportion equation
454,083.40 : 681,125.10 = 138,539.80 : x - Step 2: Convert to fraction form
454,083.40/681,125.10 = 138,539.80/x - Step 3: Cross multiply
454,083.40x = 681,125.10 × 138,539.80 - Step 4: Simplify right side
454,083.40x = 94,362,935,128.98 - Step 5: Solve for x
x = 94,362,935,128.98/454,083.40 - Step 6: Final answer
x = 207,809.70
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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.