Finding the Fourth Proportional to 420,344.92, 630,675.12 and 251,985.21
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Solution
The fourth proportional to 420,344.92, 630,675.12 and 251,985.21 is: 378,072.38
Step by Step Solution
- Step 1: Write the proportion equation
420,344.92 : 630,675.12 = 251,985.21 : x - Step 2: Convert to fraction form
420,344.92/630,675.12 = 251,985.21/x - Step 3: Cross multiply
420,344.92x = 630,675.12 × 251,985.21 - Step 4: Simplify right side
420,344.92x = 158,920,802,554.98 - Step 5: Solve for x
x = 158,920,802,554.98/420,344.92 - Step 6: Final answer
x = 378,072.38
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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.