Finding the Fourth Proportional to 205,090.10, 307,635.15 and 145,603.70
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Solution
The fourth proportional to 205,090.10, 307,635.15 and 145,603.70 is: 218,405.55
Step by Step Solution
- Step 1: Write the proportion equation
205,090.10 : 307,635.15 = 145,603.70 : x - Step 2: Convert to fraction form
205,090.10/307,635.15 = 145,603.70/x - Step 3: Cross multiply
205,090.10x = 307,635.15 × 145,603.70 - Step 4: Simplify right side
205,090.10x = 44,792,816,090.06 - Step 5: Solve for x
x = 44,792,816,090.06/205,090.10 - Step 6: Final answer
x = 218,405.55
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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.