Finding the Fourth Proportional to 258,068.21, 387,102.17 and 80,590.43
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Solution
The fourth proportional to 258,068.21, 387,102.17 and 80,590.43 is: 120,885.60
Step by Step Solution
- Step 1: Write the proportion equation
258,068.21 : 387,102.17 = 80,590.43 : x - Step 2: Convert to fraction form
258,068.21/387,102.17 = 80,590.43/x - Step 3: Cross multiply
258,068.21x = 387,102.17 × 80,590.43 - Step 4: Simplify right side
258,068.21x = 31,196,730,334.23 - Step 5: Solve for x
x = 31,196,730,334.23/258,068.21 - Step 6: Final answer
x = 120,885.60
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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.