Finding the Fourth Proportional to 386,689.99, 579,348.70 and 161,554.95
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Solution
The fourth proportional to 386,689.99, 579,348.70 and 161,554.95 is: 242,045.70
Step by Step Solution
- Step 1: Write the proportion equation
386,689.99 : 579,348.70 = 161,554.95 : x - Step 2: Convert to fraction form
386,689.99/579,348.70 = 161,554.95/x - Step 3: Cross multiply
386,689.99x = 579,348.70 × 161,554.95 - Step 4: Simplify right side
386,689.99x = 93,596,650,261.07 - Step 5: Solve for x
x = 93,596,650,261.07/386,689.99 - Step 6: Final answer
x = 242,045.70
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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.