Finding the Fourth Proportional to 393,115.18, 542,461.47 and 229,809.87
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Solution
The fourth proportional to 393,115.18, 542,461.47 and 229,809.87 is: 317,115.70
Step by Step Solution
- Step 1: Write the proportion equation
393,115.18 : 542,461.47 = 229,809.87 : x - Step 2: Convert to fraction form
393,115.18/542,461.47 = 229,809.87/x - Step 3: Cross multiply
393,115.18x = 542,461.47 × 229,809.87 - Step 4: Simplify right side
393,115.18x = 124,662,997,188.40 - Step 5: Solve for x
x = 124,662,997,188.40/393,115.18 - Step 6: Final answer
x = 317,115.70
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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.