Finding the Fourth Proportional to 256,243,399.49, 384,430,643.60 and 74,490,577.49
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Solution
The fourth proportional to 256,243,399.49, 384,430,643.60 and 74,490,577.49 is: 111,754,920.14
Step by Step Solution
- Step 1: Write the proportion equation
256,243,399.49 : 384,430,643.60 = 74,490,577.49 : x - Step 2: Convert to fraction form
256,243,399.49/384,430,643.60 = 74,490,577.49/x - Step 3: Cross multiply
256,243,399.49x = 384,430,643.60 × 74,490,577.49 - Step 4: Simplify right side
256,243,399.49x = 28,636,460,647,205,000 - Step 5: Solve for x
x = 28,636,460,647,205,000/256,243,399.49 - Step 6: Final answer
x = 111,754,920.14
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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.