Finding the Fourth Proportional to 430,888.40, 646,435.14 and 217,131.08
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Solution
The fourth proportional to 430,888.40, 646,435.14 and 217,131.08 is: 325,748.29
Step by Step Solution
- Step 1: Write the proportion equation
430,888.40 : 646,435.14 = 217,131.08 : x - Step 2: Convert to fraction form
430,888.40/646,435.14 = 217,131.08/x - Step 3: Cross multiply
430,888.40x = 646,435.14 × 217,131.08 - Step 4: Simplify right side
430,888.40x = 140,361,160,098.15 - Step 5: Solve for x
x = 140,361,160,098.15/430,888.40 - Step 6: Final answer
x = 325,748.29
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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.