Finding the Fourth Proportional to 430,813.76, 646,171.20 and 115,295.28
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Solution
The fourth proportional to 430,813.76, 646,171.20 and 115,295.28 is: 172,929.69
Step by Step Solution
- Step 1: Write the proportion equation
430,813.76 : 646,171.20 = 115,295.28 : x - Step 2: Convert to fraction form
430,813.76/646,171.20 = 115,295.28/x - Step 3: Cross multiply
430,813.76x = 646,171.20 × 115,295.28 - Step 4: Simplify right side
430,813.76x = 74,500,489,431.94 - Step 5: Solve for x
x = 74,500,489,431.94/430,813.76 - Step 6: Final answer
x = 172,929.69
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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.