Finding the Fourth Proportional to 205,350,804.72, 307,818,821.16 and 128,727,539.28
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Solution
The fourth proportional to 205,350,804.72, 307,818,821.16 and 128,727,539.28 is: 192,961,305.64
Step by Step Solution
- Step 1: Write the proportion equation
205,350,804.72 : 307,818,821.16 = 128,727,539.28 : x - Step 2: Convert to fraction form
205,350,804.72/307,818,821.16 = 128,727,539.28/x - Step 3: Cross multiply
205,350,804.72x = 307,818,821.16 × 128,727,539.28 - Step 4: Simplify right side
205,350,804.72x = 39,624,759,391,997,200 - Step 5: Solve for x
x = 39,624,759,391,997,200/205,350,804.72 - Step 6: Final answer
x = 192,961,305.64
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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.