Finding the Fourth Proportional to 430,755.12, 646,132.53 and 115,203.83
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Solution
The fourth proportional to 430,755.12, 646,132.53 and 115,203.83 is: 172,805.70
Step by Step Solution
- Step 1: Write the proportion equation
430,755.12 : 646,132.53 = 115,203.83 : x - Step 2: Convert to fraction form
430,755.12/646,132.53 = 115,203.83/x - Step 3: Cross multiply
430,755.12x = 646,132.53 × 115,203.83 - Step 4: Simplify right side
430,755.12x = 74,436,942,143.59 - Step 5: Solve for x
x = 74,436,942,143.59/430,755.12 - Step 6: Final answer
x = 172,805.70
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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.