Finding the Fourth Proportional to 430,753.12, 646,129.53 and 115,201.83
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Solution
The fourth proportional to 430,753.12, 646,129.53 and 115,201.83 is: 172,802.70
Step by Step Solution
- Step 1: Write the proportion equation
430,753.12 : 646,129.53 = 115,201.83 : x - Step 2: Convert to fraction form
430,753.12/646,129.53 = 115,201.83/x - Step 3: Cross multiply
430,753.12x = 646,129.53 × 115,201.83 - Step 4: Simplify right side
430,753.12x = 74,435,304,273.04 - Step 5: Solve for x
x = 74,435,304,273.04/430,753.12 - Step 6: Final answer
x = 172,802.70
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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.