Finding the Fourth Proportional to 430,885.21, 646,397.88 and 127,310.17
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Solution
The fourth proportional to 430,885.21, 646,397.88 and 127,310.17 is: 190,985.95
Step by Step Solution
- Step 1: Write the proportion equation
430,885.21 : 646,397.88 = 127,310.17 : x - Step 2: Convert to fraction form
430,885.21/646,397.88 = 127,310.17/x - Step 3: Cross multiply
430,885.21x = 646,397.88 × 127,310.17 - Step 4: Simplify right side
430,885.21x = 82,293,020,121.90 - Step 5: Solve for x
x = 82,293,020,121.90/430,885.21 - Step 6: Final answer
x = 190,985.95
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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.